# Why concatonation instead of add?

**URL:** <https://forum.kirupa.com/t/why-concatonation-instead-of-add/298495>\
**Category:** Uncategorized\
**Created:** [October 20, 2009, 7:01am UTC](https://forum.kirupa.com/t/why-concatonation-instead-of-add/298495 "2009-10-20T07:01:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![werehunt](https://avatars.discourse-cdn.com/v4/letter/w/b782af/32.png) [@werehunt](https://forum.kirupa.com/u/werehunt)\
**Post date:** [October 20, 2009, 7:01am UTC](https://forum.kirupa.com/t/why-concatonation-instead-of-add/298495/1 "2009-10-20T07:01:19Z")

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trace(\_thumbArea.getBoxHeight()); // 108  
trace(\_xml.verticalThumbSpacing); // 4

var shiftValue:int = \_thumbArea.getBoxHeight() + \_xml.verticalThumbSpacing;

trace(shiftValue); //1084