# 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:** 24

<div class="post-metadata">

**Author:** ![witman](https://avatars.discourse-cdn.com/v4/letter/w/d2c977/32.png) [@witman](https://forum.inductiveautomation.com/u/witman)\
**Post date:** [March 12, 2020, 5:22pm UTC](https://forum.inductiveautomation.com/t/overriding-properties-in-udt-instances-by-system-tag-writeasync/32516/24 "2020-03-12T17:22:47Z")

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Would this work for you?

```python
def overrideAlarmConfig(tagPath, alarmName, alarmProperty, value):
	config = system.tag.getConfiguration(tagPath)[0]
	for alarm in config['alarms']:
		if alarm['name'] == alarmName:
			alarm[alarmProperty] = value
			break
	basePath = tagPath.rsplit('/',1)[0]
	system.tag.configure(basePath, config, 'm')

overrideAlarmConfig("[default]PT2323/PV", "Hi", "enabled", True)

```

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