I need help with a trigger

Ok, I got this trigger: I have a hero with a item wich makes a meteor fall down from the sky and hit the ground and creates a infernal (inferno), I want the infernal to be destroyed, a region moved to him wich makes all the units in the region loose 50hp except for player 1, but it doesnt work.. help plz

event:
a unit owned by (player 1) (is summoned)
condition:
unit-type of (summoned unit) equal to (infernal)
actions:
region: center (nameofregion) on (Position of (summoned unit))
unit - remove (summoned unit) from the game
unit group - pick every unit in (units in (nameofregion) matching ((Owner of (matching unit)) Not equal to Player 1 (Red))) and do (Unit - Set life of (picked unit) to ((Life of (Picked unit)) - 50.00))

ok im gonna test that


thx it worked