# Flash CS3: AS3 and Alert popup

**URL:** <https://forum.kirupa.com/t/flash-cs3-as3-and-alert-popup/231300>\
**Category:** flash\
**Created:** [July 3, 2007, 3:37pm UTC](https://forum.kirupa.com/t/flash-cs3-as3-and-alert-popup/231300 "2007-07-03T15:37:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Louis777](https://avatars.discourse-cdn.com/v4/letter/l/bc8723/32.png) [@Louis777](https://forum.kirupa.com/u/Louis777)\
**Post date:** [July 3, 2007, 3:37pm UTC](https://forum.kirupa.com/t/flash-cs3-as3-and-alert-popup/231300/1 "2007-07-03T15:37:52Z")

</div>

Hello all, how do you do this:

Alert.show(“Are you sure?”, “Warning”, Alert.Yes | Alert.No);

in AS3?

I get the following error message when I try running this code:

“1120: Access of undefined property Alert”

Thanks for your help,

Louis