Triggering Screens only once? If my previous question can't be solved. (4.5.9) (SOLVED!)

[claydragon44]

If can't do anything with triggered NPCs, how can I at least modify the TriggerScreen script to not trigger a screen more than once?

 

[dale_coop]

You can't trigger a screen more than once.
I mean, when the screen is triggered, if you trrigger it again it won't change it because it's already triggered.