I am extremely new to solidworks but I was assigned to this particular task as I believe it's a macro question. I have assembly file with multiple configurations from design table. I need to assign some text value (in my example parameter "Mark") which has to be different for each part in the assembly and do not match with same parts in other configurations of assembly. Any way to do this?

I've tried to change it using Property Tab Builder. However if I change that custom property value in one configuration, it also changes that value in all configurations of assembly.

Again, I am very new to Solidworks, thus I am looking for any recommendations how to do such task.