P-Cell not enforcing parameter limits

This is my first post to a Cadence forum, so please excuse me if it's posted to the wrong board.  I am encountering a situation where transistor p-cells are not enforcing minimum and maximum requirements on parmaters such as finger number and finger width.  Instead, when an illegal combination of those values is entered, there's a quiet little message in the CIW, but the cell is instantiated just the same, with the illegal values.  A callback solves the problem if and only if "apply" has not been selected, in which case the device does not revert to a legal set of values after a callback.

The p-cells are foundary provided, and compiled.  

Anything I can do to enforce the rules?

 thanks!