Using other than a line# to set a BP in a script?

Hello all,

How can I set BP in a debugger script using other than a line number? My goal is to allow the script to be re-used without modification, as much as possible, as the source file is modified, which could change BP line numbers. Is there a concept of a BP label/tag/macro that could specified in a debugger script?

I am performing white-box testing by modifying variables in the middle of a function to force error conditions, so setting BPs by function name is not applicable.

Thank you,

Ira