# Memory Tags with Null value

**URL:** <https://forum.inductiveautomation.com/t/memory-tags-with-null-value/108670>\
**Category:** Ignition\
**Tags:** ignition81, vision\
**Created:** [July 18, 2025, 1:09pm UTC](https://forum.inductiveautomation.com/t/memory-tags-with-null-value/108670 "2025-07-18T13:09:09Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [July 18, 2025, 2:15pm UTC](https://forum.inductiveautomation.com/t/memory-tags-with-null-value/108670/6 "2025-07-18T14:15:56Z")

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Related topic:

> [@Null value in memory tag is read as empty string](https://forum.inductiveautomation.com/t/null-value-in-memory-tag-is-read-as-empty-string/108668):
>
> We have strange bug, where a nulled memory string tag sometimes is read in as empty string. We use a memory string tag to keep track of the operator working on a machine. After logout the tag is nulled. When an operator logs back in the tag is set again. The problem is, when reading from the tag, sometimes the nulled tag will be interpreted as empty string. Which is strange, because we also have a reference tag on that same memory tag and the reference tag is showing the null value? We checke…

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