# Expression tag alters the scan rate of referred tag(-s)

**URL:** <https://forum.inductiveautomation.com/t/expression-tag-alters-the-scan-rate-of-referred-tag-s/32380>\
**Category:** Ignition\
**Created:** [February 18, 2020, 3:33pm UTC](https://forum.inductiveautomation.com/t/expression-tag-alters-the-scan-rate-of-referred-tag-s/32380 "2020-02-18T15:33:41Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [February 18, 2020, 4:34pm UTC](https://forum.inductiveautomation.com/t/expression-tag-alters-the-scan-rate-of-referred-tag-s/32380/2 "2020-02-18T16:34:37Z")

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I’m pretty sure this is related to a bug that has been fixed and will be available in a nightly release later this week.

Same as this one: [Modbus TCP uncontrolled polling](http://forum.inductiveautomation.com/t/modbus-tcp-uncontrolled-polling/32176/6)

Confusingly, the fix is available in the current 8.0.9 nightly release, but there is a “hot fix” 8.0.9 release coming today that will not actually include it. The next nightly release that includes it will be for 8.0.10.

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