Why SaveBuffer does not work ?

Blitz3D Forums/Blitz3D Beginners Area/Why SaveBuffer does not work ?

Hi all there,
I like to take a screenshot from within my app. But the command:
If KeyHit(183) Then SaveBuffer(FrontBuffer(),"screenshot.bmp")

halts the program flow for a short moment but save no image at all.
Thank you
lo-tekk