WIC/C++: People Tagging: Unable to set the People Tagging metadata - Repost

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Hi,

Using C++, I'm trying to use the People Tagging feature by setting the PersonDisplayName property. I've tried this code:

Tools::Check(piFrameEncode->GetMetadataQueryWriter(&piFrameQWriter));
		
// Add additional metadata.
PROPVARIANT value;
PropVariantInit(&value);

value.vt = VT_LPWSTR;
value.pwszVal= L"Thomas LEBRUN";
		
Tools::Check(piFrameQWriter->SetMetadataByName(L"/xmp/<xmpstruct>MP:RegionInfo/<xmpbag>MPRI:Regions/PersonDisplayName", &value));

Unfortunately, this code throws the follonwing exception: "Additional information: The parameter is incorrect."
If I change the metadata name and tried to use the "Title" property, all works fine.


Anyone see where is my error ?


Thanks!