# Alpha tweening in AS

**URL:** <https://forum.kirupa.com/t/alpha-tweening-in-as/131337>\
**Category:** Uncategorized\
**Created:** [December 14, 2004, 6:50pm UTC](https://forum.kirupa.com/t/alpha-tweening-in-as/131337 "2004-12-14T18:50:28Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![geestring](https://avatars.discourse-cdn.com/v4/letter/g/e19b73/32.png) [@geestring](https://forum.kirupa.com/u/geestring)\
**Post date:** [December 14, 2004, 6:50pm UTC](https://forum.kirupa.com/t/alpha-tweening-in-as/131337/1 "2004-12-14T18:50:28Z")

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so i have buttons in MCs, I want it so that when yourollover it will change the alpha to 50. So tweened 100 to 50. How would i do this?