How do I Make it create an object once?

I have a character selection screen and when my limiting variable reaches 0 is asks if the player if they are sure of their selection by creating an object similiar to a window. What I have noticed in the debugger it just keeps continuously spawning the objects that make up my window. If there a way I can make it only trigger the event once and instead of forever while my variable condition is true

I got it; I guess typing it out helped me think about it. I just resigned the value to a constant I have for the total number of players.