How to exclude functions from the export dataset?

Hello, Community!

I have the process to check if there are new fields (including functions) to be added to an export dataset. I want to exclude functions automatically from this list of fields. So in my process > as soon as I got the list of fields from the EvaluateExpression plugin > I go through the fields > for each I check if is it a finction (DataStructure plugin).


But doesn’t seem to work.

How can I check if a field is a function and exclude it from the export dataset?