Power of Automation :: Auto-Color Tasks in Gantt chart based on values in Picklist field.

Power of Automation :: Auto-Color Tasks in Gantt chart based on values in Picklist field.

Hello Everyone,

A Custom function is a user-written set of code to achieve a specific requirement. Set the required conditions needed as when to trigger using the Workflow rules (be it Tasks / Project) and associate the custom function to it.

Requirement:-

One of our customers wanted to dynamically update the Task colors in the Gantt chart based on the value selected in the Picklist custom field called Approval Status Picklist. This can be achieved using Task Custom Functions along with Workflow rules in Zoho Projects. 

For instance, when the value "Design" is selected in the picklist, the corresponding task in the Gantt chart should automatically be updated to "Green" color.

Below are the values and color code mapping used in the sample custom function code. However, you can customize these mappings to suit your requirement. 

Values
Task colors
Design
Green
Wait 
Grey
Assembly
Yellow
Test 
Red
Meeting 
Blue

Custom function code:-

if(process.equals("Design")) {
color = "rgb(0, 255, 0)"; //Green
} else if(process.equals("Wait")) {
color = "rgb(124, 124, 124)"; //Grey
} else if(process.equals("Assembly")) {
color = "rgb(255, 255, 0)"; //Yellow
} else if(process.equals("Test")) {
color = "rgb(255, 0, 0)"; //Red
} else if(process.equals("Meeting")) {
color = "rgb(0, 0, 255)"; //Blue
}
changeColor = invokeurl
[
url: endPoint + portalId + "/projects/" + projectId + "/tasks/" + taskId + "/taskcolor/"
type: POST
parameters: {"color":color}
connection: "XXXXX"
];
info changeColor;
return "success";

Ensure to replace XXXXX with the Zoho Projects connection link name, along with the scope ZohoProjects.tasks.UPDATE. Check this link to learn how to create the connection. Please find the screenshot of the parameters to be mapped. 

We hope you found this post useful. If you have any questions, feel free to share them in the comments below.
 
    • Sticky Posts

    • Collaborate Visually with Whiteboard in Zoho Projects

      Whiteboard in Zoho Projects allows you to collaborate visually by creating diagrams, annotating designs, and sketching project workflows using shapes, text, and images within project modules. Team members can work simultaneously, improving productivity
    • Create Flexible Layouts with Layout Rules

      In a project, when a work moves from planning to execution, the information teams need can change at every stage. A project can need one set of details, a phase can need another, and a custom process may require an entirely different set of information.
    • Introducing the Zoho Projects Learning Space

      Every product has its learning curve, and sometimes having a guided path makes the learning experience smoother. With that goal, we introduce a dedicated learning space for Zoho Projects, a platform where you can explore lessons, learn at your own pace,
    • Improve User Onboarding in Zoho Projects with Zoho DAP

      Rolling out new processes or onboarding new users in the tool comes with a familiar challenge: the employees need guidance at the moment they are doing the work. Traditional training sessions and knowledge sharing often require users to leave the application.
    • Create Custom Module Using AI in Zoho Projects

      Every team has its own way of managing work. While standard modules support common project management needs, many business processes require their own structure, fields, and terminology. With AI-powered Custom Modules in Zoho Projects, users can create
    • Recent Topics

    • [BUG] WebTabs in ZohoCRM now have a spurious "\" displayed along with some additional HTML Head code included

      An example of the issue can be seen below:
    • Important update for Zoho RPA Windows Agent users

      Hi everyone, We would like to share an important update for Zoho RPA Windows Agent users running Windows Server 2016 or Windows Server 2019. The new Zoho RPA Windows Agent 6.0.0 and later versions are not supported on Windows Server 2016 and Windows Server
    • Multi-Option Estimates: One Estimate, Multiple Choices

      Every service request can have multiple solutions. Multi-Option Estimates help you present these different solutions in a single estimate with its own name, parts, price, and total. Each option can differ in scope, approach, or price — whatever choices
    • Delete CRM Portal

      How do I delete portals from my CRM? I created one just to test, it is not in use and is disabled but it's existence is preventing me from marking fields in modules as "required" unless I make it 'read/write' in the portal first. I'd rather just delete
    • Marketing Tip #32: Improve SEO and customer confidence with an FAQ section

      Before making a purchase, customers often have simple questions about delivery times, returns, product usage, or sizing. If they can’t quickly find answers, they may leave your store without buying. Adding a clear FAQ (Frequently Asked Questions) section
    • Contact removed when picking ticket template.

      hi new to Desk rolling out to company, replacing Freshdesk. Is there way to keep the in context contact when selecting a template? When you choose a template you lose the contact!
    • ZOHO Campaigns in ZOHO Analytics - Campaigns vs Contacts Table

      There seems to be information in the Zoho Campaigns table such as Unique Opens and Unique Clicks that can't be found in the Campaigns vs Contacts table where only Opens and Clicks are shown on a per contact level. Is there a way to bring Unique Opens
    • Zoho Publish is now available in Zoho One!

      Hello Zoho One users, We’re excited to announce that Zoho Publish is now included as part of the Zoho One suite! As businesses grow, keeping their business information accurate across online platforms can become challenging. Updates may be missed, details
    • How to change an employee mail id

      Hi, Does the administrator have the rights to edit an  employees mail id. 
    • Cousin Domain Verification in Zoho Mail: Identify and block look-alike domains

      Phishing attacks often rely on domain names that closely resemble legitimate ones. This makes it difficult for users to identify fraudulent emails at first glance. Zoho Mail's Cousin Domain Verification feature allows administrators to define trusted
    • How do I add 2 agents under the same email?

      I have 2 agents who use the same email address. I added one, but when adding the second agent, it says that the email is already registered. How do I configure this properly?
    • Zoho Desk API modifiedTimeRange returns HTTP 500 around 2026-03-08T02:00:00.000Z

      Hello Zoho Support Team, We are experiencing a reproducible HTTP 500 Internal Server Error when querying the Zoho Desk API search endpoint with a specific modifiedTimeRange boundary. ### API Endpoint GET /api/v1/tickets/search ### Reproduction Steps &
    • Updating an Invoice Line Item's Discount Account via API Call / Deluge Custom Function

      I need help updating an invoice line item's discount account via API. Below is a screenshot of the line item field I am referring to. Now the field to the left of the highlighted field (discount account) is the sales income account. I am able to modify
    • Collaborate Visually with Whiteboard in Zoho Projects

      Whiteboard in Zoho Projects allows you to collaborate visually by creating diagrams, annotating designs, and sketching project workflows using shapes, text, and images within project modules. Team members can work simultaneously, improving productivity
    • Associate project with timer on iPhone

      When I start the timer without first associating a project (on my iPhone), its starts fine but now when I need to associate a project, and click on the link, I get a list of EVERY project I've ever put into Zoho Books. It used to just show active projects.
    • Sales Tax Refund on Commerce Order

      I've looked high and low. Relatively new to ZOHO but not to systems in general. How do we produce a refund for sales tax charged and paid for by a customer in error? This does not impact inventory stock. Simply for accounting and getting the $ back to
    • Importing Chart of Accounts from Quickbooks -- "Debit or Credit"?

      I'm trying to switch from QB to Zoho Books. I've prepped my chart of accounts and put it into the format following the structure of the sample CSV file. But one thing that does not exist at all on the Quickbooks side is the Zoho column for "Debit or Credit".
    • Long term pricing for customers managing multiple organizations

      I've been using Zoho extensively for quite some time and genuinely think it's one of the most powerful and customizable business platforms available. Between Zoho Books and Zoho Analytics, I've invested a significant amount of time building automations,
    • Default Status for Appointments to Completed

      We use Zoho Bookings integrated with Zoho Desk to book time for tech support sessions, we've configured it to only allow for a contact to book a single session to avoid customers overbooking time that may not be needed. The trouble is, once a session
    • Customer User Fields for use in Rules

      Hi, I would like to be able to add custom fields to the users, such as Department or Role, which can then be used in Rules, Reports, etc. as a condition. A use case is limiting Global lists or Choices based on the users Custom Field, so one form can be
    • Add ZeptoMail to Zoho One

      Hi Zoho Team, I would like to request that ZeptoMail be added as a fully included application within Zoho One. Why this is important Zoho One is positioned as a unified business operating system that brings the applications an organization needs under
    • Item image on document

      I know what I am asking may not be possible, but I will ask anyway, maybe I will get lucky, and someone else is doing it. My business is based on special orders only from various online stores. When I send a quote to a client, I generate a separate quote
    • Dashboard Metric Drill-Down Shows Stale Data

      Summary: When clicking between different metric components on a custom dashboard, the drill-down list shows data from the previously opened metric instead of the one just clicked. Steps to Reproduce: Create a custom dashboard with multiple pre-defined/templatized
    • Zoho Marketing Automation WhatsApp Campaign Import Sync for Zoho Analytics

      WhatsApp is a critical channel in modern marketing, yet WhatsApp Campaign metrics from Zoho Marketing Automation currently cannot be natively imported into Zoho Analytics via the default advanced analytics connector. Integrating this into the standard
    • Allow Reauthorizing CRM Connections Without Revoking First

      Currently, when a Zoho CRM connection needs to be reauthorized or authorized with another account, we first have to revoke the existing authorization and then authorize it again. This creates a gap where the connection is unavailable, and any functions,
    • Programmatic Itemized Expenses?

      It does not appear that it is possible to create itemized expenses programmatically (via the API)? Is this correct, or am I misunderstanding the situation?
    • Prefix & Suffix on Single Line, Number, etc.

      Hi, I would like to have the same Prefix and Suffix that was added to the Unique ID on Text and Number Fields. Use case could be as basic as temperature, as per another Idea I have to use Single Line (Text) for a number that might have leading zeros today,
    • Handle Leading Zeros in a Number Field

      Hi, If I use a Number Field, set with Min 7 Digits and Max 7 Digits, and enter 0000001, it will result in 1 and an error as it removes the leading zeros, the same with entering 0012340 will result in 12340 and error. So I have to use a Text Field and
    • Is there a way to show contact emails in the Account?

      I know I can see the emails I have sent and received on a Contact detail view, but I want to be able to see all the emails that have been sent and received between all an Accounts Contacts on the Account Detail view. That way when I see the Account detail
    • Virtual Option for Fields

      Hi, I would like to be able to choose another option other than Read-Only or Disabled, such as Virtual. And with Virtual, the field is shown on the form and avilable in rules, but NOT saved to the Database. A use case is having multiple Large Lists of
    • Zoho Marketing Automation Cannot Sync Lookiup Fields

      Hello all, It seems that Zoho MA cannot sync Lookup fields from the CRM. Can you confirm if this is the case? Is there a workaround? Do you know if Campaigns can sync with custom modules and also with Lookup field in the CRM? Thank you!
    • Specific ListView Canvas on Canvas Home Page Always Loads Most Recent ListView, Not the One Specified

      I had mentioned this to ZOHO, but I mainly wanted to see if others in the Community are also facing this problem. I created a Canvas ListView for a Custom Module, and then created a Canvas Home page (technically on a tab item, but I'm not sure if that
    • Announcing the new SKILL.md for Zoho CRM and the updated OAS repository!

      We are introducing a new zoho-crm skill to make working with Zoho CRM Developer tools (like APIs, functions, widgets, client scripts, queries etc) easier and faster, with the help of AI in your preferred AI harness like Claude Code, Codex, Cursor, VSCode
    • Zoho Campaigns EU Topics API returns HTTP 200 with empty topicDetails

      Hello, Our Zoho Campaigns EU organisation has two custom topics visible in the Campaigns UI, and contacts are subscribed to them. However, an OAuth request with ZohoCampaigns.contact.READ to https://campaigns.zoho.eu/api/v1.1/topics returns HTTP 200 with
    • Caso de Éxito: Cómo Toyota Financial Services unificó la atención al cliente con Zoho

      "Después de seis meses con el CRM en producción estamos encantados." Miriam Cárdenas, Responsable Departamento ATC Toyota Financial Services es la división financiera de Toyota encargada de gestionar la financiación de vehículos y, junto con KINTO España,
    • Zoho Books - France

      L’équipe de Zoho France reçoit régulièrement des questions sur la conformité de ses applications de finances (Zoho Books/ Zoho Invoice) pour le marché français. Voici quelques points pour clarifier la question : Zoho Books est un logiciel de comptabilité
    • Sending Zoho form link from custom function in Zoho CRM

      Hello,  We intend to send a Zoho form link to certain Contacts using a custom function. The Zoho Form must be pre-filled with the Deal information and contacts receiving it should be able to modify the values and upon submission, those modifications must
    • Automatically remove commas

      Team, Please be consistent in Zoho Books. In Payments, you have commas here: But when we copy and paste the amount in the Payments Made field, it does not accept it because the default setting is no commas. Please have Zoho Books remove commas autom
    • Zoho ERP | Product updates | July 2026

      Hello users, We're back with another round of updates to help you streamline your operations. This month's release brings new features and enhancements designed to help you work more efficiently. Read on to discover everything that's new in Zoho ERP this
    • Zoho CRM

      Cuándo voy a adjuntar un archivo .pdf en un registro en el campo Archivo obtengo el siguiente error:
    • Next Page