Perhaps I should clarify the problem I have. I, successfully, modified the name of the Datum Axis from A_8 to B in the generic model. I, then, set the datum axis as a GTOL datum and placed it in the dimension which defines the hole surrounding the axis.
It shows properly in the generic when I "SHOW" the dimension. The two instances I created in the FAMILY TABLE, however, still show A_8 as the axis name and Pro doesn't seem to allow the name to be changed in the instance. The option "NAME" is grayed out. I can set the axis A_8 in the instance but it shows, of course, -A_8-.
Thanks for your attention.