Is hydroxylamine monodentate or ambidentate ligand?


> 
> What is the total number of geometric isomers of the complex $\ce{[Pt(Cl)(py)(NH3)(NH2OH)]+}$?
> 
> 
> 


If $\ce{NH2OH}$ acts as an ambidentate ligand, then there should be six geometric isomers. Or is it strictly a monodentate ligand?


