# Adding variables

**URL:** <https://forum.kirupa.com/t/adding-variables/53526>\
**Category:** Uncategorized\
**Created:** [June 4, 2004, 7:31pm UTC](https://forum.kirupa.com/t/adding-variables/53526 "2004-06-04T19:31:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![randocommando](https://avatars.discourse-cdn.com/v4/letter/r/b5ac83/32.png) [@randocommando](https://forum.kirupa.com/u/randocommando)\
**Post date:** [June 4, 2004, 7:31pm UTC](https://forum.kirupa.com/t/adding-variables/53526/1 "2004-06-04T19:31:33Z")

</div>

I have two comboboxes on my stage,  
I used this code for one:  
on (change) {  
var items = (value)  
var fountain:Number = (items \* 50);  
\_parent.fsum.text = fountain;

}  
This for the other:

on (change) {  
var items = (value)  
var water:Number = (items \* 50);  
\_parent.wsum.text = water;

}

How do I code it to get the total for both comboboxes? And, do I put the code on an action layer?