# Extending Point class problem

**URL:** https://forum.kirupa.com/t/extending-point-class-problem/268696
**Category:** flash
**Created:** [August 17, 2008, 12:44pm UTC](https://forum.kirupa.com/t/extending-point-class-problem/268696 "2008-08-17T12:44:21Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Pjanssen](https://avatars.discourse-cdn.com/v4/letter/p/f05b48/32.png) [@Pjanssen](https://forum.kirupa.com/u/Pjanssen)
#### Post date: [August 17, 2008, 12:44pm UTC](https://forum.kirupa.com/t/extending-point-class-problem/268696/1 "2008-08-17T12:44:21Z")

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Hi,

I’m trying to make a Vector class which will provide some basic mathematical methods. I want to have this class extend the Point class, so it can be used in functions like \<DisplayObject\>.globalToLocal(pt: Point)

However, when I try to make a get/set method for the x or y values, I get this error:  
1023: Incompatible override.

Is there any way around this ?