There are 2 types of wall jumping - "jump_press" and "stick_flick". You can set which one is used for the whole game in "game_settings". The code in the character init scripts does not need to be changed unless you want to adjust the variables.
I have another question… is there some variable to the speed the caracter is Falling through the wall. I want to slow down or even make to it don’t fall.
I'm not sure what you mean by "falling through the wall". Do you want the player to slide down the wall slowly or something? You could add code to the Aerial state or maybe modify the Wall Cling state (and enable wall clinging for every character).
