# Anyway to evaluate a variable as an expression?

**URL:** <https://forum.kirupa.com/t/anyway-to-evaluate-a-variable-as-an-expression/184908>\
**Category:** Uncategorized\
**Created:** [April 9, 2006, 1:08am UTC](https://forum.kirupa.com/t/anyway-to-evaluate-a-variable-as-an-expression/184908 "2006-04-09T01:08:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![joran420](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/joran420/32/2329_2.png) [@joran420](https://forum.kirupa.com/u/joran420)\
**Post date:** [April 9, 2006, 1:08am UTC](https://forum.kirupa.com/t/anyway-to-evaluate-a-variable-as-an-expression/184908/1 "2006-04-09T01:08:24Z")

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like

```auto

var Happy:Array
Happy[Happy.length] = "_root.Train1_mc"
if (evaluate this string as an expression(Happy[Happy.Length])._x == 100({Do stuff}

```

and it would be the same as

if (\_root.Train1\_mc.\_x == 100){Do stuff}

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<div class="post-metadata">

**Author:** ![TheCanadian](https://avatars.discourse-cdn.com/v4/letter/t/67e7ee/32.png) [@TheCanadian](https://forum.kirupa.com/u/TheCanadian)\
**Post date:** [April 9, 2006, 1:12am UTC](https://forum.kirupa.com/t/anyway-to-evaluate-a-variable-as-an-expression/184908/2 "2006-04-09T01:12:08Z")

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Look into the _eval_ function 😉

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<div class="post-metadata">

**Author:** ![joran420](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/joran420/32/2329_2.png) [@joran420](https://forum.kirupa.com/u/joran420)\
**Post date:** [April 9, 2006, 1:39am UTC](https://forum.kirupa.com/t/anyway-to-evaluate-a-variable-as-an-expression/184908/3 "2006-04-09T01:39:17Z")

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> [@TheCanadian](#):
>
> Look into the _eval_ function 😉

thank you sir

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<div class="post-metadata">

**Author:** ![nathan99](https://avatars.discourse-cdn.com/v4/letter/n/96bed5/32.png) [@nathan99](https://forum.kirupa.com/u/nathan99)\
**Post date:** [April 9, 2006, 3:56am UTC](https://forum.kirupa.com/t/anyway-to-evaluate-a-variable-as-an-expression/184908/4 "2006-04-09T03:56:42Z")

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or  
[http://www.n99creations.com/?pID=tutorials&col=Blue&tut=basics\_of\_actionscript\_for\_flash&p=8&l=Flash\_MX\_04](http://www.n99creations.com/?pID=tutorials&col=Blue&tut=basics_of_actionscript_for_flash&p=8&l=Flash_MX_04)  
down the bottom

from my tutorial  
[http://www.n99creations.com/?pID=tutorials&col=Blue&tut=basics\_of\_actionscript\_for\_flash&p=1&l=Flash\_MX\_04](http://www.n99creations.com/?pID=tutorials&col=Blue&tut=basics_of_actionscript_for_flash&p=1&l=Flash_MX_04)