Looping Actions?

Exactly what the name says. I'm trying to create one unit every 2 seconds and order it to a certain place, where it is killed. I've gotten the creating and moving and killing done, but the problem is the trigger only fires once. This is probably an easy question, but what action is used to make this trigger work for the whole game?

I think it would be helpful to see the trigger, but just change the actions to Periodic Event - Every X Seconds (how long you want the pause to be before spawns)

Ah, thanks john :) I hope I can find it...