# Field name for expression from variable?

**URL:** <https://community.grafana.com/t/field-name-for-expression-from-variable/72756>\
**Category:** Dashboards\
**Created:** [September 21, 2022, 12:09am UTC](https://community.grafana.com/t/field-name-for-expression-from-variable/72756 "2022-09-21T00:09:37Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![epicnetworks](https://avatars.discourse-cdn.com/v4/letter/e/41988e/32.png) [@epicnetworks](https://community.grafana.com/u/epicnetworks)\
**Post date:** [September 21, 2022, 12:09am UTC](https://community.grafana.com/t/field-name-for-expression-from-variable/72756/1 "2022-09-21T00:09:38Z")

</div>

For influxDB queries, I can modify the Query name using variables…

eg: ${tag\_machine\_name} Voltage

But I cannot do this for Expressions, nor can I do it in the field overrides section (grafana just prints out the variable name).

Is there a workaround to modify the field name using a variable?