How to get/update record in a custom module in Zoho Extension through deluge script/Custom function?

How to get/update record in a custom module in Zoho Extension through deluge script/Custom function?

Hi, 

I am working on Zoho Extensions, with a custom module and custom fields in it. And I am succeeded in it.
Now I want to apply some workflows on that custom module. My custom module name is Test Services, and its API name is  test_service, I think.

I have written custom function for that, but it is giving me error: Error evaluating MAP expression.

My code is:
  1. void workflowspace.autoPopulateFields(map test_service)
{
    testService_ID = input.test_service.get("testextension4.Test_Services.ID");
    info testService_ID;
    testService_record = zoho.crm.getRecordById("CustomModule1", testService_ID.toLong());
    info testService_record;
    recordUpdate = zoho.crm.updateRecord("custommodule1", testService_ID.toString(), { "Email" : "abc@gmail.com" });
    info recordUpdate;
}


I think, I am making mistake in getting error in giving ID or Module Name to the function.

Please help me.
Thanks 

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