# Writing to a tag issues

**URL:** <https://forum.inductiveautomation.com/t/writing-to-a-tag-issues/57902>\
**Category:** Ignition\
**Created:** [March 31, 2022, 10:09pm UTC](https://forum.inductiveautomation.com/t/writing-to-a-tag-issues/57902 "2022-03-31T22:09:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Alfred\_Thayer](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@Alfred\_Thayer](https://forum.inductiveautomation.com/u/Alfred_Thayer)\
**Post date:** [March 31, 2022, 10:09pm UTC](https://forum.inductiveautomation.com/t/writing-to-a-tag-issues/57902/1 "2022-03-31T22:09:46Z")

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Several weeks ago I add some toggle switches to a project.  
Some write to a DINT and others toggle a Boolean.  
The worked with no issue.  
Today the customer reported an issue with them.  
They don’t respond at all and cause this error;  
Traceback (most recent call last):  
File “event:mouseReleased”, line 7, in   
java.util.concurrent.TimeoutException: java.util.concurrent.TimeoutException

```
caused by TimeoutException

```

Ignition v8.0.17 (b2020111211)  
Java: Azul Systems, Inc. 11.0.7

Then the app locks up.  
This also happened to me in both client and developer.  
The system locked up then after a min or so all the tags on the open window went bad.  
I checked the OPC Server (for AB ControlLogix) and it seemed fine.  
All the tags being accessed by the switches do exist.  
I see no issue with the PLC.

Any thoughts?

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**Author:** ![zacht](https://avatars.discourse-cdn.com/v4/letter/z/ea5d25/32.png) [@zacht](https://forum.inductiveautomation.com/u/zacht)\
**Post date:** [March 31, 2022, 10:12pm UTC](https://forum.inductiveautomation.com/t/writing-to-a-tag-issues/57902/2 "2022-03-31T22:12:24Z")

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Can you post the code on the mouseReleased event?