Multiply selection images from gallery in Android

Hi!
I am trying to use such code :

Intent intent = new Intent(Intent.ActionPick);
intent.SetType("image/*");
intent.SetAction(Intent.ActionGetContent);
intent.PutExtra(Intent.ExtraAllowMultiple, true);
this.StartActivityForResult(Intent.CreateChooser(intent, "Selecte a Photo"), 0);

to select multiply images. But I can do this only with photos in camera folder. In albums folders I can select only single image. Why do I get this behaviour? Thank you.