Guys im new and need help

[WokeTheGod]

so im working on a fighing game currently and realized that I need a character selcetiom screen so I searched up a youtube tutorial amd started getting to work once the lines of code were finished this problrm arised itself and I dont understand it

I'm dropping a link
in the attached files of the error message
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Pls help
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much appreciated

 

[The-any-Key]

Your variable is not set before you try read it.
Ex say I got this is in a create event

my_character=obj_controller.selected_character

But obj_controller has not yet run code like:

selected_character="Strong and mighty rich";

So you get an error that obj_controller has not yet set any selected_character variable.

 

[Paskaler]

Most likely, rm_characterSelect is a non-existing room. Make sure the room exists and that you didn't misspell the name. But, in general, thay error means that you've tried to access a variable that wasn't defined/wasn't defined yet.