I can't seem to get this condition to work.
I'm starting to think the software is not capable of checking for existence of parameter in the mtl file.
If anybody has an alternate Condition / solution to make this work, let me know.
I think by parameters it means only such entities defined in a part or assembly. A material file is neither so this function is not valid for it.
Yeah, I think the only solution is to have some j-link app running in the background to populate the material file attribute when it is missing...