Oracle Forms

Viewport X Position on Canvas Viewport Y Position on Canvas These Properties determine where the viewport will be positioned on the stacked canvas itself.

Fine I understand this or at least i thought i did until i played around wiht it and it dosen't seem to be working the way i understood it should from the online docs.

Problem:
On the stacked canvas itself i can see the viewport is represented by a box designated with a thin black line. If i resize the box the viewport property settings adjust as they do if i reposition the the box somewhere else on the stacked canvas. BUT when i run the form the viewport does not reflect some of the settings i.e. the viewport size changes but what isn't happening is the viewport position which seems to be fixed no matter what i input in the Viewport X/Y Position on Canvas property.

So am i changing the right settings so that the viewport shows me different parts of the stacked canvas at runtime?

Cheers
Gus