Hello you all, I`m very glad to be part of this forum that has already helped me a lot these recent days.

I would like to delete the letter part of a string variable and keep only the numeric part (so the variable becomes a numeric one).
actual variable expected variable
robbery (342) 342
assault (494) 494
Moreover, I would like to label the new numeric variable with the deleted name of the old variable. There are as much categories as existing types of crimes, so the "manual" way is not the best option to me.
Hope I`ve been clear enough. Thanks!