Need help with If, then, else.

[Fralexxelarf]

Hi! im currently working on my first custom story and i need help with a script that does this:

If player walks into that area in 5 seconds then do this, else do nothing

I dont want to write out what's going to happen cause that would be a huge spoiler for people who are going to try it out.

[Stepper321]

I don't get it, whaT?