# 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:** 7

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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, 6:21pm UTC](https://forum.inductiveautomation.com/t/overriding-properties-in-udt-instances-by-system-tag-writeasync/32516/7 "2020-02-23T18:21:37Z")

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You bet; it looks like there’s also a bug in 8.0.9 with setting overrides with system.tag.configure. If we write `False` to `OVR.Enabled` with `system.tag.writeAsync` as shown above so it’s overridden to false, `system.tag.configure` will then clear the override if we set it to `None` (as expected). But if we use `system.tag.configure` to set that override to `True`, it also clears the override (instead of overriding to true as expected). And I haven’t found a way to get `system.tag.configure` to do anything when trying to configure `OVR.Enabled` to `False`. In all cases `system.tag.configure` returns`[Good]`, but the only case where it behaves as expected is setting the override to `None`.

**EDIT** : See [this post below](http://forum.inductiveautomation.com/t/overriding-properties-in-udt-instances-by-system-tag-writeasync/32516/20?u=witman) for the correct way to set overrides with system.tag.configure.

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