Actually nevermind. I figured out how to do it on my own :D
I just had to do some research on ds_list_add
You never answered my reply before, so I'll put it here.
I really don't understand what you meant, but I just want it to change room after a dialogue finishes, what would be the exact code? I don't know much about ds_list
So if I wanted to make it delete an object, what exactly would I do?
How would I have an event happen right after the NPC finishes their dialogue? I've tried various things but couldn't seem to find one that worked.