Detect Player with units

[hdm]

Is it possible ? Right now a Trigger I'm making uses the event "Player enters string chat" and then the actions creates a hero for him (e.g. Type -create Footman, a footman is created for him). But is there any condition that if he has already a unit (whatever unit, not necessarily the footman) he can't create a new one using the STRING ?

 

[Ezekiel12]

Very easily, you just have to extend your trigger.

Use for example a boolean array which keeps track whether a player is allowed to spawn more units.