Is there a node that create var in BP? or something other method to do?
You can create variables in BP on the left side you have a pannel with dispatcher, function and variables, click the little + icon on any of these and you have an variable. Inside functions you can create a local variable just like that. You can also right click an output and click promote to variable. As far as I know you can’t make variables that are local to a scope in blueprints. There is no fuction to create boolean or another variable that you can call.