# 3D Problems

**URL:** <https://forum.kirupa.com/t/3d-problems/293560>\
**Category:** flash\
**Created:** [July 30, 2009, 6:40pm UTC](https://forum.kirupa.com/t/3d-problems/293560 "2009-07-30T18:40:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![riveroaks](https://avatars.discourse-cdn.com/v4/letter/r/90db22/32.png) [@riveroaks](https://forum.kirupa.com/u/riveroaks)\
**Post date:** [July 30, 2009, 6:40pm UTC](https://forum.kirupa.com/t/3d-problems/293560/1 "2009-07-30T18:40:58Z")

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I want to move the projection center of my SWF to the middle of the screen. So in my document class I put:

root.transform.perspectiveProjection.projectionCenter = new Point(600,400);

I’ve also tried

this.transform.perspectiveProjection.projectionCenter = new Point(600,400);

and

stage.transform.perspectiveProjection.projectionCenter = new Point(600,400);

None of these lines seems to do anything, no matter what value I set for the projectionCenter. Does anyone know where I’m going wrong? I’ve read a lot of short tutorials and articles about 3D in Flash CS4, but for some reason their code is just not working for me.

Also, I am using Flash CS4 Professional and I am publishing in Flash Player 10

Thanks.