Excessive escaping when using Grafana variables in queries

[rul-hydro]

My dashboard has a variable with a regular expression to select different metrics.

If I use this variable in a query, special characters are escaped twice.

With a variable value of Regex=unit., the query {my_tag=~"${Regex}"} will be executed as {my_tag=~"unit\\."}, not returning any series instead of {my_tag=~"unit."}, which would return unit1, unit2 etc.

Grafana 11, Plugin 0.8.2, VictoriaMetrics 1.101.0

[hagen1778]

Hello @rul-hydro !
Could you try repeating the test with Plugin 0.8.5?
I've failed to reproduce it. Here's the steps I took:

1. Created a variable below:

2. Created panel with VM datasource plugin and the following query: 3. Tried changing the variable options and observe state of the panel: 4. Request params in Network panel seem correct as well