According to Class Specifiers | Unreal Engine Documentation the meta tag BlueprintThreadSafe can only be used with functions in a Blueprint Function Library class, UBlueprintFunctionLibrary.
Those functions needs to be static to work.
According to Class Specifiers | Unreal Engine Documentation the meta tag BlueprintThreadSafe can only be used with functions in a Blueprint Function Library class, UBlueprintFunctionLibrary.
Those functions needs to be static to work.