# Overriding Properties in UDT Instances by system.tag.writeAsync()

**URL:** <https://forum.inductiveautomation.com/t/overriding-properties-in-udt-instances-by-system-tag-writeasync/32516>\
**Category:** Ignition\
**Created:** [February 22, 2020, 10:20am UTC](https://forum.inductiveautomation.com/t/overriding-properties-in-udt-instances-by-system-tag-writeasync/32516 "2020-02-22T10:20:14Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![witman](https://avatars.discourse-cdn.com/v4/letter/w/d2c977/32.png) [@witman](https://forum.inductiveautomation.com/u/witman)\
**Post date:** [February 23, 2020, 5:58pm UTC](https://forum.inductiveautomation.com/t/overriding-properties-in-udt-instances-by-system-tag-writeasync/32516/4 "2020-02-23T17:58:07Z")

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I just tested this on 8.0.9:  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/f/f797aa3273f76aba2e40faf7ae9561b0871e6a56.png)  
Tag configured with no overrides:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/c/caeb58a036e16f2c45ae2283ce1ad15369c8a9b1.png)

```python
def callback(result):
	print result
system.tag.writeAsync(['[default]DPB/PI05051/CMD/OVR.Enabled'],[False],callback)

```

After running that script, `Enabled` override is on and it is set false:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/8/80b8446cc9735a593c77d9acf15bfc2cb678e074.png)  
The override was set automatically with the tag write.

Are you on a different version, or is there something different in what you’re trying than in the test above?

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