need HELP 4 a trigger

need HELP 4 a trigger

pls guys help me with one trigger

I want to set units to spawn from 1 point and go directly to another every 30 sec or 1 min

plz tell me how to set this
because no metter what I try I can't do it

pls help someone ....

trigger 1
Event
 Elapsed gime time is 1.00 seconds
condition
action
 Create 1 Footman for Player 2(Blue) at (Centre of      (Spawn Point)) facing default building angle

trigger 2
Event
 A Unit Enter Region
Condition
 (Unit type of (Entering Unit)) Equal Footman
Action
 Unit - Order Entering Unit To Move To (Centre of (Region1))

trigger 3
 A Unit Enter Region
Condition
(Unit type of (Entering Unit)) Equal Footman
Action
 Wait 30.00 Seconds 
  Unit - Order Entering Unit To Move To (Centre of (Region2))


  etc...

this is how you can do this, there are also other way availbe

10x man
but how do I set the time ?

that's what I can't do exactly

and how many times do I have to write this trigger so that it spawns to the end of the game ?

have a look in the events section there is a event that makes it run the trigger exery time you want it to so have a look and that should be what you want. i think its got something weith periodic, meh have a look and it should be there.