Please help with my first custom action

Hi :)

I try to understand Deluge, but the help section is quite hard to understand. I can script (quite good) with Powershell and other scripting languages, so logic is not a problem,

I can also create Business rules for our Zoho ticket system.

What I want: I want to check if the text (description) of a request/ticket in our ticketsystem has certain values. If yes, then I want to resolve the ticket with a solution.

First I thought it's easy: create a custom function and return a bool:

bodytext = requestObj.get("description");
boolVal = bodytext.containsIgnoreCase("Test1234");
return boolVal;

Of course its not that easy, because a custom function in a business rule cant return a bool, but a map. And I have no idea what that means.

So maybe someone could be so kind to walk me through one time how to create a business rule that checks if there is a special content in the script (it will be several strings I test for and any of them existing should return true) and if yes, it will resolve the ticket.

Im also fine with a website that explains Deluge and how to use it in business rules. I can teach myself a new scripting language, but on the Deluge help there are very few standard varables. I had to ask the support how to get the text on a ticket in a varable since I could not find that anywhere. Its requestObj.get("description")).

Thank you so much
Joachim