[KevinH]

No the function replace is the only thing specified in the replace field. It is not a substring replacement, it is a function doing the replacement.

All search match groups are provided to your function. So you get the entire string that was matched, plus all of the values for each match group to use as you see fit in your function.

So can use your own python code to replace anything you want with anything you want. You can build the entire replacement value. You just can not try to squeeze it into the replace field, your function should handle that.