[Trigger] Trigger not working?

[shinji]

This trigger didn't work for me... Is there a right way to do this?

• Hero - Set Gladiator[(Player number of (Owner of (Killing unit)))] Hero-level to ((Hero level of Gladiator[(Player number of (Owner of (Killing unit)))]) + 1), Show level-up graphics
• Wait - Bla
• Unit - Bla

EDIT : Oops. Never mind. I found out why it didn't work.