alright i made the script and its attached
to use it you will need game logic units at every spot where there will be an explosion
then have the trigger that will cause the explosion and in the activation field type
[[gamelogic1,gamelogic2,etc.], 0] exec "Explode.sqs"
where the gamelogic1,2 ect will be replaced with the names of each game logic you want
and the 0 is the delay between each explosion, so the way it is it is instantaneous, but if you make it 2 there will be 2 seconds of space between each explosion
you can also use this for vehicles or men, or anything listed under units in the editor for that matter.
tell me if there are any problems, but it should work just fine, i've tested it though, and it worked fine for me