hy rcs, please, can you explain a bit more how those work ? i don't understand why you use #10001 and 11001, thus 2 variables, for a single offset ?

In regards to the offset base line measurement you could do this at after the tool call and before the g43 tool length setting
please excuse me, i am not sure, but don't you mean that those 2 have to be before and after g43 ? kindly