# Error when attempting to write to a SIM device

**URL:** <https://forum.inductiveautomation.com/t/error-when-attempting-to-write-to-a-sim-device/3446>\
**Category:** Ignition\
**Created:** [October 17, 2011, 3:28pm UTC](https://forum.inductiveautomation.com/t/error-when-attempting-to-write-to-a-sim-device/3446 "2011-10-17T15:28:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ryanbeno](https://avatars.discourse-cdn.com/v4/letter/r/8baadc/32.png) [@ryanbeno](https://forum.inductiveautomation.com/u/ryanbeno)\
**Post date:** [October 17, 2011, 3:28pm UTC](https://forum.inductiveautomation.com/t/error-when-attempting-to-write-to-a-sim-device/3446/1 "2011-10-17T15:28:09Z")

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I have attempted to create different SIM devices on my Gateway so I can work with the functionality of the Windows. Everytime I try to edit the writeable tag wheter in my SQL Browser or a button I get the same error listed below.

ERROR [SimpleBoundTagAdapter-AWT-EventQueue-0] Error writing “1” to tag `TESTPLC/Writeable/WriteableInteger1`  
Unknown

I have tried restarting my gateway and deleting and recreating the button and also the OPC-UA. I have 7.3.0 as my version of Ignition.

Please help

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [October 17, 2011, 3:38pm UTC](https://forum.inductiveautomation.com/t/error-when-attempting-to-write-to-a-sim-device/3446/2 "2011-10-17T15:38:45Z")

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The writable sim tags are not actually writable in the 7.3.0 release. We’ve already fixed this for 7.3.1, which will be available soon. The fix may also have made it into the latest 7.3.1 beta release.

Thanks for reporting this.

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<div class="post-metadata">

**Author:** ![ryanbeno](https://avatars.discourse-cdn.com/v4/letter/r/8baadc/32.png) [@ryanbeno](https://forum.inductiveautomation.com/u/ryanbeno)\
**Post date:** [October 17, 2011, 5:01pm UTC](https://forum.inductiveautomation.com/t/error-when-attempting-to-write-to-a-sim-device/3446/3 "2011-10-17T17:01:22Z")

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Thank you Kevin. Much appreciated.