Interior windows not reflective when rendered in vray!

Hi. I’m am having trouble getting my windows to reflect properly when viewed from the interior of the building when rendering in vray. I’ve applied a suitably reflective glass material which works fine and reflects properly when viewed from outside the building and also works well when applied to an object within the interior of the building too. But no visible reflections of the interior of the space at all from the windows.

Does it perhaps have something to do with vray/sketchup prioritising the ability to view outside the window at the expense of interior reflections? Or maybe I’m not setting up my lighting properly (although apart from the lack of reflections from the windows the renderings I’m getting look great).

Any help would be much appreciated!

I’ve solved it. Not sure what exactly I’d done to mess it up but it appears I’d not constructed the window pane properly. REdid it all from scratch and it hello reflections!

Maybe incorrect face orientation the first time?