How to get an interface pointer variable to work w/UPROPERTY()

[The_Space_Bar_Rider]

I’m setting the TScriptInterface via C++. But The Actor that implement the interface is created by BP. But I finally got it to Work like that :
IYourInterface::Execute_YourFunctionName( ActorPointerWhichExecuteTheFunction, params … );
THanks for the answers anyway.

But the thing is the IMyInterface is always at 0x00000 in debuger. (So nullptr)
I use MyTScriptInterface = MyObjectPtr to set it !