need correct syntax for script

I need the correct syntax for a ruby script. i need the correct syntax for:

Code: [Select]

if event [map_id:1][event_id:4] touches event [map_id:1][event_id:5]: change value of variable[id:7] -=5

or something like that, basicly, i need a script that makes it so: when a spesific event touches a differant spesific event, a spesific variable changes value (-5). but i dont know the correct ruby syntax for all of that. can someone give my the syntax, or just the script?

does anyone know how to do this?

You need to go fool around with it, or go to scripts to do this. K?