SC2Mapster

how make the trigger start spawn soon as hits the region.

this  got now
    Events
"Unit - Any Unit Enters Region 001"   <<<<<< this not working why???
" Timer - Every 12.0 seconds of Game Time"

    Conditions
        (Number of Living units in (Any units in (Entire map) owned by player 8 matching Excluded: Structure, Heroic, Worker, Missile, Buried, Dead, Hidden, with at most Any Amount)) < 150
    Actions
        Unit - Create 12 Zergling for player 8 at Point 002 facing 270.0 degrees (No Options)
        Unit - Order all units in (Last created units) to ( Attack targeting relative points near Point 001) (Replace Existing Orders)
        Unit - Order all units in (Last created units) to ( Patrol targeting relative points near Point 001) (Replace Existing Orders)
        General - If (Conditions) then do (Actions) else do (Actions)
            If
                Number of Players > 3
            Then
                Unit - Create 24 Zergling for player 8 at Point 002 facing 270.0 degrees (No Options)
                Unit - Order all units in (Last created units) to ( Attack targeting relative points near Point 001) (Replace Existing Orders)
                Unit - Order all units in (Last created units) to ( Patrol targeting relative points near Point 001) (Replace Existing Orders)
            Else

also i like know how i make the player 2 then spawn a unit

Desnt have these 2 event mean its either every 12second of game time OR when any unit enter do bla bla
what you need is proably 2 trigger ; the 2nd one is initally off

trigger 1:
event a unit enter area X
action: turn on trigger 2 turn off trigger 1

Trigger 2
event: every 12second
action: spawn stuff bla bla

might even be possible to do it in one trigger depending on what you need

thank you very much