# Session custom Barcode scanner

**URL:** <https://forum.inductiveautomation.com/t/session-custom-barcode-scanner/66173>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [November 7, 2022, 6:45am UTC](https://forum.inductiveautomation.com/t/session-custom-barcode-scanner/66173 "2022-11-07T06:45:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Paul.M](https://avatars.discourse-cdn.com/v4/letter/p/c0e974/32.png) [@Paul.M](https://forum.inductiveautomation.com/u/Paul.M)\
**Post date:** [November 7, 2022, 6:45am UTC](https://forum.inductiveautomation.com/t/session-custom-barcode-scanner/66173/1 "2022-11-07T06:45:42Z")

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Hello,

I try to use a barcode component to write a custom session property.

Everything works if I'm using a tag but when I try to write it to a custom session property, it doesn't write anything to her.

> line = [data.text][0]  
> system.tag.write('[TAGTest]BAR', line) #works fine  
> session.custom.Scanned\_Barcode = line #doesn't write it

Script it's on 'Session Events' - 'Barcode'

I tried also with a message handler, same situation unfortunately

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<div class="post-metadata">

**Author:** ![Paul.M](https://avatars.discourse-cdn.com/v4/letter/p/c0e974/32.png) [@Paul.M](https://forum.inductiveautomation.com/u/Paul.M)\
**Post date:** [November 8, 2022, 7:43am UTC](https://forum.inductiveautomation.com/t/session-custom-barcode-scanner/66173/2 "2022-11-08T07:43:59Z")

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I fixed it, it was my fault. I made the variable on root (page) instead of session. 🙂