[Trigger] Kill 5 units Trigger

[GnoobSauce]

I am making a campaign and I need to make a trigger where when I kill 5 things of a certain unit type, it marks the quest as complete, etc.
The only part troubling me is the 5 Units part.

 

[ady_illidan]

• Events:
  • A unit dies
• Conditions:
  • Unit-type of triggering unit equal to your unit
• Actions:
  • Set CountUnits = CountUnits + 1
    • If\then\else multiple functions:
      • Conditions:
        • CountUnits greater than or equal to 5
      • Then do:
        • Mark Quest as completed
      • Else do:

you need an integer variable

 

[GnoobSauce]

Thank you!
I'd +rep you if I had some myself.