Bracket in Metrics, how to handle the query

my prometheus exporter for Postfix creates much metrics with brackets in the name, for example:

postfix_showq_message_age_seconds_count{queue=“active”} XYZ

How should i handle that in the Grafana Query?

the following doesn’t work:

I believe the problem is {queue=“active”} and I tried to escape it via different ways like {queue=“active”} and so on.

Can anyone help me with that?

Okay found my mistake:

solution is:
postfix_showq_message_age_seconds_count{queue=“active”, instance=“SERVER:9154”,job=“mx0”}