Set activity completion using PHP

Hi there,

(it seems that this is the more appropriate forum to post this)

So hoping someone can help me with what shoud be fairly easy (but I'm battling to find an answer in all my searches)!

I've developed a few activities using Flash. All I want to do is set the activity to 'completed' by calling a Moodle PHP function / running a script.  (maybe even giving the student a 100% grade)

I don't want to package it as a SCORM object. (been there, done that, working, but don't want the SCORM 'interface').

Your guidance would be highly appreciated!

(using ver 2.4)