I'm just learning, when i tried to replace in the last much i found that as you said I couldn't do this specialy if we have many other information in the middle, but yes puting .* in the front of the expression, it retrieve the last much and other way too is using pos, isn't it?

Likes mathematic, i guess that exists many way to solve a problem and i try to understand all posible way so i could decide in the future, what's use in which case.

Thank ikegami, you guys are really great and I apreciate very much

Nicolais