// SetPedCollectionPropIndex
void SET_PED_COLLECTION_PROP_INDEX(Ped ped, int anchorPoint, char* collection, int propIndex, int textureId, BOOL attach);
An alternative to SET_PED_PROP_INDEX that uses local collection indexing instead of the global one.
The local / collection relative indexing is useful because the global index may get shifted after Title Update. While local index will remain the same which simplifies migration to the newer game version.
Collection name and local index inside the collection can be obtained from the global index using GET_PED_COLLECTION_NAME_FROM_PROP and GET_PED_COLLECTION_LOCAL_INDEX_FROM_PROP natives.