# Tweening a custom variable

**URL:** <https://forum.kirupa.com/t/tweening-a-custom-variable/309397>\
**Category:** flash\
**Created:** [May 13, 2010, 10:54pm UTC](https://forum.kirupa.com/t/tweening-a-custom-variable/309397 "2010-05-13T22:54:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![reactor](https://avatars.discourse-cdn.com/v4/letter/r/e47774/32.png) [@reactor](https://forum.kirupa.com/u/reactor)\
**Post date:** [May 13, 2010, 10:54pm UTC](https://forum.kirupa.com/t/tweening-a-custom-variable/309397/1 "2010-05-13T22:54:23Z")

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Hello,

has anybody seen a Tweener (I do not want to use original Adobe ones) that tweens a custom variable.

For example, I have a class called Car, and it has a parameter named “speed”. How can I tween this parameter (car.speed) - let’s say from 50-80.

Thanks in advance!