Checkpoint - Save at a certain location trigger

Hi,

Have been working with a CC template that allows you to save the game and on death it re-spawns you to that location comes with a interaction death screen/spash as well.(don't remember the correct title)

I've been trying to modify it so it works based on a trigger instead of a keybind but I have no xp in lua so could only do so much. It's currently bound by default to F5, I want this to change to a interaction on a trigger so that you have to physically travel to this point to activate this save script, for the life of me I can't work it out...it seems simple enough for someone with xp in lua though, any takers to help me out?