You can’t update the response through the pm.response function. It’s static.
What you can do, is parse the response into a variable and then update that variable.
You’ve already parsed the response to “responseData”, so you should just be able to loop though that. You don’t really need the function.
Have a look at the following topic which has an example of looping through and updating the response info. You can include your working IF statement into the mix,
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