playableUnits returns correct value on a dedicated server; but can you explain WHY the trigger is excuted while conditions are NOT satisfied ? (in fact, i'm not in the trigger perimeter to satisfy the first condition: activation by Blufor)
The problem is not the return value of playableUnits, but the trigger's activation.
Or may i have misundestood the Condition Function, where it replaces conditions defined above (timer, side etc...) ?

Moreover, is it normal in preview mode to not be counted as playableUnit ? (in Preview mode, it would not be surprizing that PlayableUnits returns a value equals to 1; but returning an empty value is certainly surprizing)