Creating UE4 events, opposed to c++ _event?

Development Programming & Scripting
4

So i’ve got the idea but the compiler won’t compile. All I have is:

DECLARE_DELEGATE_OneParam(SuppliesGivenEvent, ASupply*);

UCLASS(Blueprintable, BlueprintType)
class THE_BATTLE_OF_MALDON_API AVillageVolume : public ABaseVolume
{

…
UPROPERTY(BlueprintAssignable, Category = “Events”)

	SuppliesGivenEvent OnSuppliesGivenEvent;

}

It just doesn’t know what SuppliesGivenEvent is, Unrecognized type ‘SuppliesGivenEvent’ etc?