# Set a variable on legends depends from prometheus query

**URL:** <https://community.grafana.com/t/set-a-variable-on-legends-depends-from-prometheus-query/110622>\
**Category:** Grafana\
**Tags:** legend, grafana\
**Created:** [December 22, 2023, 2:47pm UTC](https://community.grafana.com/t/set-a-variable-on-legends-depends-from-prometheus-query/110622 "2023-12-22T14:47:10Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![fferraro87](https://avatars.discourse-cdn.com/v4/letter/f/f07891/32.png) [@fferraro87](https://community.grafana.com/u/fferraro87)\
**Post date:** [December 22, 2023, 2:47pm UTC](https://community.grafana.com/t/set-a-variable-on-legends-depends-from-prometheus-query/110622/1 "2023-12-22T14:47:10Z")

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Hi,  
i’ve a raw result from a query like this :

```auto
dovecot_num_logins{ambiente="ambiente_dev", db="ambiente_devtest", host="dovecot.test.local", server="/var/run/dovecot-backend_1/stats-reader", type="global"}

```

and i want to put on legends for example :  
{{host}} backend {{number\_backend}} where host is the host from raw result and number\_backend is the number 1 from “/var/run/dovecot-backend\_1/stats-reader” .  
How can i do?  
do you’ve some ideas?  
thanks