Timers, I need help with my triggers

ok, I've never needed to use timers before, but in my current map I'm hoping to have it so heroes, upon dying are revived after 30 seconds, like in dota and other arena type maps. However my current triggers don't seem to be working.

Essentially I have a trigger for when a hero dies, then that sets a timer in a timer array which then there are 8 triggers for the possibilities of each timer of the array.

But the hero never revives, any reason why? is there some trick with timers like how dialogs have to have the buttons recreated with every use? please help meee I have no idea how to use them.

Could you post your triggers? Cause It must be a little mistake as your description sounds like you done the correct stuff.

ahh, never mind, I solved it. My problem was I didn't realise there was a set of actions for timers, so I was trying to use 'set variable' to do it. Of course that doesn't work at all, but it looked like it might have.