Episode I : Exploring the World of Custom Functions in Zoho Desk

Episode I : Exploring the World of Custom Functions in Zoho Desk


Hello Again!
Welcome to an Automation Adventure in the World of Zoho Desk
Join us on a journey to explore how custom functions can enhance and extend the capabilities of Zoho Desk.
Automation is everywhere. From robotic arms assembling products on factory floors to automating tasks in the software world, automation has revolutionized how we work out stuff. But what does this have to do with Zoho Desk? 
Anline, a curious resident in the Zoho Desk world, is exploring how automation can transform her workflow.

Anline’s Quest in the Zoho Desk World  

Anline is building her own world within Zoho Desk, but she’s hit a few roadblocks. She wants to perform specific operations; like updating ticket statuses, fetching data from external services, and automate repetitive tasks. She knows Zoho Desk has the tools she needs, but where does she start?
DeskAutomate Services is here as a guide to the Automation City. The citizens of Zoho Desk World operate based on their licenses. Each license unlocks different levels of automation capabilities.
Anline has the Enterprise edition, which grants her the access to the most powerful tools: Custom Functions. How can this empower Anline?

The Power of Custom Functions  

Custom Functions are like magic spells in the Zoho Desk world. They give users flexibility to tailor automation to their exact needs. While basic automation features are available to all license holders, Custom Functions are exclusive to Enterprise users. These functions let Anline go beyond the basics and create automations that meet her unique requirements. What makes them even more accessible is Deluge, Zoho’s in-house scripting language.
But there’s a catch: Anline isn’t a coding expert in Deluge. How can she harness the power of Custom Functions without getting lost in complex scripts? DeskAutomate guides Anline to the prebuilt functions and a user-friendly framework, simplifying the coding process.
Whether you’re new to coding or an experienced developer, Deluge simplifies the process of creating Custom Functions with its intuitive interface and drag-and-drop functionality.

The Deluge Script Editor: Your Coding Playground  

To access the Custom Function window, go to Setup (S) >> Developer Space >> Functions >> New Function.
When you open the Custom Function window in Zoho Desk, you’ll find a user-friendly interface designed to help you build scripts using drag-and-drop options. Here’s what you’ll discover: Each section has predefined variables which you can drag and use based on your requirements.
1. Basic Commands
The Basic section includes essential commands like setting variables, adding comments, and inserting informational text into your script. These foundational elements help you structure your Custom Function logically.
          Example: businessDaysCount = 5; //<variable> = <expression>;
2. Conditional Logic
The Condition section allows you to add conditional operators such as if, else if, and else. These operators let you program decision-making logic into your Custom Function.
Example:
  1. if (TicketStatus == "Open")
  2. {
  3.     info "This ticket is still open.";
  4. }
3. Notifications
The notifications section lets you enter values to send emails or post messages via Cliq.
Example:
  1. sendmail
  2. [
  3. from : zoho.userid
  4. to   : support@zylker.com
  5. subject : "Ticket is created"
  6. message : "Thank you for your enquiry. A ticket has been created and our experts will respond to you."
  7. ]; 
4. Integrations
Zoho Desk makes coding easy for integrations. With drag-and-drop options, you can create webhook integrations and API calls without writing complex code from scratch. The Custom Function window provides all the necessary code snippets, so you can customize them to fit your requirements.
Example: contactRecord = zoho.crm.getRecordbyId("Contacts",9876787);
5. Collections
The Collections feature lets you gather and manage strings of data or specific information within your Custom Function. This is particularly useful when you need to process or analyze multiple data points.
Example:
  1. myList = Collect();
  2. myList.insert("ID1");
  3. myList.insert("ID2");
  4. myList.insert("ID3");
  5. for each ID in myList
  6. {
  7.    info ID;
  8. }
You can also enable the Syntax Builder within your Coding playground. Enabling this option will help you choose variables from the drop-down windows having prebuilt variables/Fields.

Mapping Parameters and Testing Your Script  

Once you’ve built your Custom Function, the next step is to map it to your Zoho Desk environment:
1. Edit Arguments
The Edit Arguments option lets you map params within your Custom Function to fields in your tickets. For example, you can link the Ticket ID, Ticket Owner, or Case ID to the corresponding fields in your Zoho Desk setup. This ensures that your Custom Function interacts seamlessly with your data.
2. Authentication and Connections
Zoho Desk uses OAuth tokens to establish secure connections for Custom Functions. Commonly, this involves using Zoho OAuth to make API calls within Zoho's scope. You can choose the appropriate scopes during authorization to ensure your Custom Function has access to the necessary data and functionalities.
Note: If you choose third-party applications, please create a connection using the required default or custom services.
3. Save and Test
After saving your script, use Save & Execute Script to test it with sample inputs. This lets you test the function, ensuring functionality, debug, and refine your code before deployment.
In the upcoming episodes, we'll dive into how Custom Functions work and contribute to expanding the capabilities within Zoho Desk.
See you in the next episode,
Regards,
Lydia | Zoho Desk. 
    • Sticky Posts

    • Register for Zoho Desk Beta Community

      With the start of the year, we have decided to take a small step in making the life of our customers a little easier. We now have easy access to all our upcoming features and a faster way to request for beta access. We open betas for some of our features
    • Share your Zoho Desk story with us!

      Tell us how you use Zoho Desk for your business and inspire others with your story. Be it a simple workflow rule that helps you navigate complex processes or a macro that saves your team a lot of time; share it here and help the community learn and grow with shared knowledge. 
    • Tip #1: Learn to pick the right channels

      Mail, live chat, telephony, social media, web forms—there are so many support channels out there. Trying to pick the right channels to offer your customers can get pretty confusing. Emails are most useful when the customer wants to put things on record. However, escalated or complicated issues should not be resolved over email because it's slow and impersonal.  When you need immediate responses, live chat is more suitable. It's also quick and convenient, so it's the go-to channel for small issues. 
    • Welcome to Zoho Desk Community - Say hello here!

      Hello everyone! Though we have been here for a while, it’s time to formally establish the Zoho Desk Community; we’re really happy to have you all here! This can be the place where you take a moment to introduce yourself to the rest of the community. We’d love to hear all about you, what you do, what company or industry you work for, how you use Zoho Desk and anything else that you will like to share! Here’s a little about me. I am Chinmayee. I have been associated with Zoho since 2014. I joined here
    • Webinar 1: Blueprint for Customer Service

      With the launch of a host of new features in Zoho Desk, we thought it’ll be great to have a few webinars to help our customers make the most of them. We’re starting off with our most talked about feature, Blueprint in Zoho Desk. You can register for the Blueprint webinar here: The webinar will be delivered by our in-house product experts. This is a good opportunity to ask questions to our experts and understand how Blueprint can help you automate your service processes. We look forward to seeing
    • Recent Topics

    • RouteIQ for Zoho FSM

      Beste, Zou wel top zijn dat we een RouteIQ hebben voor FSM aangezien we constant moeten zien wat de beste route is voor onze monteurs. Nu moeten we een speciale aparte programma hebben om de beste route te berrekenen voor onze monteurs aangezien de planning
    • Export Tickets from the Help Center

      Hello everyone! We are now allowing end users to export tickets directly from the help center. The ticket export allows users to: Filter tickets by Department, Priority, and Account before exporting. Download files from Export History (Setup > Data administration
    • Zoho Books Sandbox environment

      Hello. Is there a free sandbox environment for the developers using Zoho Books API? I am working on the Zoho Books add-on and currently not ready to buy a premium service - maybe later when my add-on will start to bring money. Right now I just need a
    • Super Admin Logging in as another User

      How can a Super Admin login as another user. For example, I have a sales rep that is having issues with their Accounts and I want to view their Zoho Account with out having to do a GTM and sharing screens. Moderation Update (8th Aug 2025): We are working
    • Is it possible to remove filtering options?

      My CRM has a lot of custom fields that should not be used in filters or views. Fields that are automated and exist only to store temporary values that get used in functions. These create a lot of noise in the list of fields to filter. Isn't there any
    • Function #18: Associate invoice templates automatically based on customer language

      For businesses dealing with a diverse linguistic clientele, it becomes crucial to send out invoices in the customer's preferred language to ensure effective communication. This requirement can be handled in Zoho Books by creating invoice templates in
    • Changing field types

      Question im a Zoho CRM user and curious, if I change a flied type from single or multi line text to a URL field type will i lose the data in the field or will it be converted to website link automatically. Thanks
    • Quote PDF – Header image stopped rendering suddenly

      Hello Zoho Support Team, We are facing an issue with Quote PDF templates in Zoho Books. Previously, images added inside the Quote header HTML were rendering correctly. However, recently the header image is no longer appearing, while header text still
    • Changing Default PDF Name

      Is it possible to change the default name of a PDF? As of right now, all of my quotes are named 'QT_$QuoteNumber' (i,e: 'QT_19803471298374) - would it be possible to change this to: '$CompanyName - $AccountName - $QuoteNumber' for instance?
    • Tip 2: Recursive functions in Deluge: How to dynamically run a function for a specified number of times.

      Hi folks, As part of the Zoho Creator - Tips and Tricks series every fortnight, we are back today with a new tip on Recursive functions.  Let us first quickly understand what Recursive functions are: A function that calls itself one or more times is known as a Recursive function. That is, you can execute a function to perform a particular action a specific number of times. And, at the end of each iteration, a new output is generated. Recursive functions are commonly used by programmers as it enables
    • Removing "Products" as mandatory field from Sales Order creation page

      Hello, friends According to our workflow, we should: 1) create Sales Order (Stage "New") 2) call and discuss the Products with a customer (Stage "Communication") 3) add the Products to the Sales Order during the call However, "Products" is mandatory to
    • Function #48: Manage fixed installment payments using Zoho Books

      Hello everyone, and welcome back to our series! Businesses offer installment payment options to their customers, particularly for expensive purchases, to ease the financial burden on them. By breaking down the total cost into smaller, more manageable
    • Function #1: Convert an accepted Estimate to Sales Order automatically in Zoho Books

      As you’re aware, Zoho Books provides a default option to have the estimates automatically converted to invoices once your customer accepts them. Many of you wanted a similar option for sales orders, so here’s a workflow that converts accepted estimates
    • Spotlight series #6: The Show app for Android TV has a new look!

      Hello everyone! We are delighted to introduce our revamped and redesigned Show app for Android TV.  Smart TVs are exploding in popularity. Android TV alone has over 110 million active monthly devices. Zoho Show, as part of a constant effort to improve
    • Employee Appraisal Applicability - Why is Date of Joining Hard-Coded?

      In the new (to me, at least) Performance Appraisal Cycle wizard, it's possible to set criteria to determine for whom the appraisal process should apply. This makes sense on its face. However, one MUST use the Date of Joining criterion as a filter. Why
    • WorkDrive for Excel Add on

      Dear Sir/Madam Have installed Workdrive for Microsoft add on But unable to view the same added in Excel
    • Zoho Books integration sync from Zoho CRM does not work

      Hi Zoho Community & Zoho Support We just tried to get a sync some products into Zoho Books from CRM using the native sync and we're getting an error: "It looks like some mandatory fields you're trying to map are empty. Please provide valid field names
    • Appraisals - Order of Previous Reviews Should Be Newest to Oldest

      The new Zoho People layout generally does a decent job at providing the necessary information for performing appraisals of employee performance. One example of this is the Previous Reviews section: This information is helpful when conducting a review.
    • Referencing a cell from another sheet

      My workbook has multiple sheets. Each sheet has some calcluated totals in certain cells. The front master sheet has a list of everything that is detailed on the other sheets, with the totals. These could change at any time, so the totals need to be references to the other cell's value, not a fixed number. So on the master sheet, I put in =, then go the other sheet and choose the cell and hit Enter. In regular Excel, this works. But in the Zoho sheet, it doesn't work. I have to edit the result by
    • auto close automated alert tickets which are similar

      Hello ZOHO Community, we are using ZOHO Desk to process automated monitoring alerts. Scenario: Our monitoring system creates a ticket when a threshold is exceeded, e.g. Subject: Computer 1 – CPU usage 100% – Error A few minutes later, once the issue resolves
    • Paging through API results. a major gap in your documentation.

      There is no way for me. to get all of my data through a single API call. Typically REST APis have mechanisms for paging through API results. But the documentation for the API I am using: https://desk.zoho.com/DeskAPIDocument#Introduction Has no mention
    • Recurring invoices were generated with old template...

      I have recurring invoices setup. Ones generated on 10.20.2025 used the modified template I had used. But for some reason, on the ones created on 11/20/2025, it seems the invoices created reverted to the previous version of the invoice template. Notably,
    • How do people handle using Outlook and Zoho Project calendar at the same time?

      We have an ongoing problem in our organisation where we use Zoho Projects to plan all of our projects tasks and that also allows us to look forward using the workload report to see which of our consultants are overstretched etc and which are available.
    • Please, make writer into a content creation tool

      I'm tired of relying on Google Docs. I'm actually considering moving to ClickUp, but if Writer were a good content creation tool instead of just a word processor, I would finally be able to move all my development within the Zoho ecosystem, rather than
    • Write-Off multiple invoices and tax calculation

      Good evening, I have many invoices which are long overdue and I do not expect them to be paid. I believe I should write them off. I did some tests and I have some questions:  - I cannot find a way to write off several invoices together. How can I do that,
    • Leave Report Emailed Weekly

      I am wondering if someone knows how to have a report generated either weekly or monthly or both for department heads and ownership of upcoming employee leave. For instance, it would be nice to get an emailed report on Friday for the upcoming week of who
    • Zoho desk desktop application

      does zoho desk has a destop applicaion?
    • Tip #54- Exploring the Files Icon in Zoho Assist- 'Insider Insights'

      As we’re already in mid-December, it’s a good time to take a closer look at one of the most useful options in the Zoho Assist remote support dashboard—the Files icon. To get started, log in to Zoho Assist using your credentials. Once you’re in, navigate
    • Tip#47: Estimation planner

      Sprint planning becomes easier, smoother, more collaborative and more accurate with the Estimation Planner extension. Most work items involve multiple users, and each user's role and effort vary. To provide an unbiased and fair estimation point to the
    • Painfully Slow Zoho mail

      Since yesterday Zoho Mail seems to have starting functioning very slowly and having a few bugs. It's slow to open mails, slow to send, slow to change between email accounts. Sometimes clicking on a particular folder (eg Sent folder) stops working and
    • Upcoming update to Google Drive integration in Zoho Creator

      Hello everyone, We're writing to inform you about an upcoming update to how Zoho Creator integrates with Google Drive. In Zoho Creator, during actions like importing files to create an app or attaching files to fields, you can choose files directly from
    • Time Tracking on Iphone doesn't stop

      When I start a time tracking session the timer starts as expected. However when I hit stop, the timer remains on that project. The only buttons available are discard and start. Start runs the timer more and discard says it will throw away the data from
    • Zoho Sign - Zoho CRM extension upgrade

      Hi everyone, We've updated Zoho Sign extension for Zoho CRM with significant internal changes. Impact on existing Zoho Sign extension users Users using the extension without customization If you are using the integration without implementing Zoho Sign's
    • Zoho Books blocks invoicing without VeriFactu even though it is not mandatory until 2027

      I would like to highlight a very serious issue in Zoho Books for Spain. 1. The Spanish government has postponed the mandatory start of VeriFactu to January 1st, 2027. This means that during all of 2026 businesses are NOT required to transmit invoices
    • Group by Owner/ Owner Kanban /Group by Custom Field

      Hi, We are missing the option of viewing Tasks grouped by their owner, as it is an essential function for us to manage our employees' working tasks. We find it hard to inspect what are the tasks that our employees are working on.  We are seeking an option
    • Flow using way too many tasks

      I built a flow that is using way too many tasks for what it is doing. I reached out to support a week ago but never heard back so hoping the community can help. Does a filter count as a task? I am seeing tons of records filtered with < 1 Sec Time Taken
    • Regarding the integration of Apollo.io with Zoho crm.

      I have been seeing for the last 3 months that your Apollo.io beta version is available in Zoho Flow, and this application has not gone live yet. We requested this 2 months ago, but you guys said that 'we are working on it,' and when we search on Google
    • Start Workflow from Deluge Script

      I have developed a customized process from our CRM that leverages a deluge script to create a statement of work document. Once the document has been created via the merge and store function, I would like the ability to start a workdrive review & approve
    • Saved Sections?

      In sites editor, the + button reveals options to add a section, element, etc. It includes Saved Sections, but I can find no way to save a section I've already created. Otherwise, is there a way to copy a section from one page to another?
    • Marketer's Space: Unable to select a sender address? Here's the fix

      Hello Marketers, Welcome back to yet another post! So you've added a sender address in Zoho Campaigns and later found that you're not able to select it while creating an email campaign. Has this ever happened to you? If so, don't worry—you're not alone.
    • Next Page