URGENT. Is there any way to delete the last parameter of a string ?
I need to concatenate a string of letters parameters (A, B, C). And each one is added when I do an action (it works). For example, when "A" is at first place of the string and "action 1" is done, "B" is concatenated to "A" (perfect). But, when "action1" is removed I need that "B" removes from the string too, is it possible?