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SpatialInteractionDetectedEventArgs::TryGetPointerPose throws

Hi.
Anyone with the same problem ? Here it is.

I get an exception thrown when getting the pose (no pointer is null says the debugger):

            SpatialInteractionDetectedEventArgs^ args = m_spatialInputHandler->CheckForInteraction();
            if (args != nullptr)
            {
                // set (Position,ForwardDir,UpDir) to intersect holograms
                SpatialPointerPose^ pose = args->TryGetPointerPose(coordSystem);//<---exception thrown
                ...

CheckForInteraction() returns the object coming from API event SpatialInteractionManager::OnInteractionDetected(), as suggested in the official docs to find the hologram gazed by the user.
Tnx!

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