The necessity of this condition is so obvious that I cannot understand why it is not there. Especially so since that would fit into the way that Construct 2 was meant to be used. It is in these moments that I remember the propaganda: "It allows anyone to build games — no coding required!"
In any case, Construct 2 is an incredible program, an intelligent way to make complex things in less time than it would take otherwise.
I do not like to wait so I found another way to solve my problem. In my language we call it "gambiarra". I don't know the word in English for that.
Even so, you are right, it is not a bug. It does feel like a missing feature. Im sorry for that, I will be more careful the next time.
Thank you very much for your help.
ps. Sorry if I use the wrong words. Actually, I do not speak English.