# AS3 Help!!
**URL:** https://forum.kirupa.com/t/as3-help/636616
**Category:** flash
**Created:** [May 15, 2017, 9:55am UTC](https://forum.kirupa.com/t/as3-help/636616 "2017-05-15T09:55:13Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@lewismills](https://forum.kirupa.com/u/lewismills)
#### Post date: [May 15, 2017, 9:55am UTC](https://forum.kirupa.com/t/as3-help/636616/1 "2017-05-15T09:55:13Z")
i have a promblem with my code im new to flash and it has be really confussed i dont no alot about flash but the problem is
TypeError: Error #1006: checkCollisionWithPlayer is not a function.
at Platform/onEnterFrame()
and in main it is a function as you see below:
public function checkCollisionWithPlayer(wall:MovieClip)
{
if (player!= null)
{
Collision.block(player, wall);
trace(“boo”);
}
}
---
### Author:  [@linusj](https://forum.kirupa.com/u/linusj)
#### Post date: [May 16, 2017, 12:56pm UTC](https://forum.kirupa.com/t/as3-help/636616/2 "2017-05-16T12:56:09Z")
Did you place that code in the timeline? or is it in main class? ‘public’ only works within a package(class) and not on the timeline.