Can't create new scene

Hello,
i have problem with creating new scene
I need to create scene with name "20", but stencyl says "that name is already taken"
but i haven't any type of objects with this name (no actor, scene, behavoir, sound, font, etc)
please help me

tried to find something with "open resourse"

Something is called 20, so you´ll probably have to work around it.
Try a leading 0, 020, and add a snippet in your code to add the 0 when you jump to scene 20. Assuming that is why you need it. 

Couldn´t help peeking at your scenes, and you´ve got a great idea going. 

I need scene named "20" as its my 20 level in game,
game have player's stats which writes automatically using scene name and list using one code for all scenes
as i can't use "20" (and 21 as i knowed later) i have to make my code bigger
or change all names in the same name, for example "a1" "a2" "a3"
and replace a with blank space)

Try searching the game folder for anything named "20".

Sometimes I have that same problem.  It happens to me only if I originally had something named (in your example) "20" and then I deleted it, but I have no idea why it stays in the name directory.  It's probably a bug that Stencyl 3.0 will fix.

I would always advise prefixing / level names, e.g. Level20 and would always avoid using digits as names (for anything)!

Although it's possible, it's not best practice to use numbers for names / labels, etc.

I would always advise prefixing / level names, e.g. Level20 and would always avoid using digits as names (for anything)!

Although it's possible, it's not best practice to use numbers for names / labels, etc.

Second that. 

I will follow your advise in future
Finally I resolved the problem by renaming all level (for example "20" became "Level20")
and replacing level with blank space by script