Check radio button value in workflow post function

[Edgar Oregel]

I'm creating a "Set a field as a function of other fields" post-function attempting to set the assignee of a field based on the value of a radio button. I tried a simple string comparison ({customfield_###} = "string") but that condition doesn't get triggered when i test that string value. I'm wondering if it takes specific syntax but haven't been able to find something that will work. Any ideas?