sAIMatchingArt->GetMatchingArt() doesn't return kGroupArt

I made a plugin to notify my extension when something got selected. But I didn't want to notify every time selection changed, just when something is in fact selected, so i used sAIMatchingArt->GetMatchingArt().

It works as expected except when groups or clippled objects are selected, even tho I included it them in the filter list.

I tried kAnyArt by itself, and it returns all objects but groupart. I also tried only kGroupArt and it returns abosuletly nothing.

ASErr SController::GetSelection(AIArtHandle ***matches, ai::int32 *numMatches){
	short types[]={
//		kAnyArt,
		kGroupArt,
		kPathArt,
		kCompoundPathArt,
		kMysteryPathArt,
		kTextFrameArt,
		kPlacedArt,
		kSymbolArt,
		kForeignArt,
		kRasterArt
		
	};
	   int size = sizeof(types) / sizeof(*types);
	   AIMatchingArtSpec *spec = new AIMatchingArtSpec[size];
	   for (int nIndex = 0; nIndex < size; nIndex++)
	   {
		   spec[nIndex].type = types[nIndex];
		   spec[nIndex].whichAttr = kArtFullySelected;
		   spec[nIndex].attr = kArtFullySelected;
	   }

	   ASErr result = sAIMatchingArt->GetMatchingArt(spec, size, matches, numMatches);
	   delete []spec;
	   if (result)
		   return result;
	   if (!*numMatches)
		   return kCanceledErr;
	   return kNoErr;
}