Damaging click

i got a problem with making a damaging click every time i click on a monster it dies instantly theres 1 problem but i dont noe which is could some1 tell me if these are the rite triggers

Event
Player -Player1 selects a unit

Condition
(owner of (Triggering unit)) Equal to player 12 (Brown)

Actions
Unit-Set life of (triggering unit) to -60 <------ the value life trigger
Selection-Remove (triggering unit) from selection for Player 1 (red)
Wait 2 game time seconds
Trigger-turn off (this trigger)
Trigger-Turn on this trigger

I think you got mistake on Value Life Trigger. You putted there -60. I think units health goes to -60 and it dies.

Well wat can i do to make the triggering unit to lose 60 life everytime i click on it

Im not good with the triggers. And my answer was a wild guess..

Set the life of the unit to life of unit - 60
1) - arithmetic - 2) unit-property 3) - 60