Export Art as .ai file

Hello there,

I'm actually trying to get the artSet and I want to write .ai file with it ! 

AIArtSet artSet = NULL;

error = sAIArtSet->NewArtSet(&artSet);

sAIArtSet->SelectedArtSet(artSet);

AIRasterizeSettings rastSettings;

AIArtHandle tempRaster = 0;

AIArtHandle layerGroup = 0;

error = sAIArtSet->IndexArtSet(artSet, 0, &layerGroup);

AIRealRect bounds;

error = sAIRasterize->ComputeArtBounds(artSet, &bounds, false);

rastSettings.type = kRasterizeRGB;

rastSettings.resolution = 300;

rastSettings.antialiasing = 2;

rastSettings.options = kRasterizeOptionsNone;

error = sAIRasterize->Rasterize(artSet, &rastSettings, &bounds, kPlaceInsideOnTop, layerGroup, &tempRaster, 0);

ai::FilePath ioFilePath(ai::UnicodeString(path));

AIDataFilter* dstfilter = NULL;

AIDataFilter* filter = NULL;

error = sAIDataFilter->NewFileDataFilter(ioFilePath, "write", 'prw', 'ai', &filter);

error = sAIDataFilter->LinkDataFilter(dstfilter, filter);

dstfilter = filter;

But I don't know what to do next :0