I have an assembly that I want to move with a macro. Within the assembly are several points whose distance from a plane I want to be able to change via a dialog box in the macro.

When I try to place a reference point on a vertex of the part I choose the "on point" option but get "Rebuild Errors - Failed to create a reference point". This happens no matter what vertex I choose.

I get the same error if I try to place a reference point on a vertex within a sub-assembly that includes the part whose vertex I want to name.

Alternatively, is there a way to change the name of a vertex? For example can I change "vertex<3>" to "RFcorner" or some other name I choose?