No problem Miu3
I said that vector solution is not working with my code, all the solution suggested here was tried before I post, so, I simple give up, double jump is not my main objective now.
To be clear, I didn't see a single sample file using double jump and the falling settings. They are all using only the jumping setting, that's nice, but after the R64/65 where was implemented that platform triggers (on jump, on land, etc) broken my code and my conditionals for double jump stop to work.
Maybe later I do a completely new code for it.
Thanks everybody for the time spend trying it, I appreciated your help.
I'll come here back only when I solve this issue, in one month +/-.