How can I add multiple sources of blackbox as dropdown in grafana dashboard?

[niceguysan]

The picture is self explanatory:
I have two source ip of blackbox exporter i.e 10.0.10.25 and 192.168.1.12

• What Grafana version and what operating system are you using?
  Latest version of grafana via docker

• What are you trying to achieve?
  I have 2 sources of blackbox_exporter, I want to list both the sources in dropdown to be able to select the source.

[mattabrams]

@niceguysan just checking: have you tried adding a query-based template variable?

• example on our public sandbox
• Add a query variable | Grafana Labs
• Advanced variable format options | Grafana Labs