how do i update a "use object on object" script to check for a flag?

Use an IF script set to "if object has flag."

Didn't get it. can you be a little more specific? isn't that what i done in the first place?

It's difficult to be more specific unless I can see the code you have. Could you either post your code here, or attach your game file and tell me what object you're trying to put the script on and what flag you're checking for?

I am currently following the tutorial, step by step so i can learn it well. i must update the "use defibrillator on bob" script to chek for the "alive" flag.

http://quest5.net/wiki/More_things_to_do_with_objects

the page is here, but i will attach the game file anyway.

If you are doing the tutorial you can look at the end of "6. Moving objects during the game". There you can download the "Tutorial Game.aslx" and have a look at it