Request Custom Function does not work

Request Custom Function does not work

Hi

I am trying to use a Request Custom Function to change request_type and Mode on created Request.
Using this code but when I test execute nothing happend and no error.

requestObj.put("request_type", {"name":"Incident","id":"1"});
requestObj.put("mode", {"name":"Webb","id":"2"});
return requestObj;

My plan is to use this function in a Business Rule.

SPD version 11201

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