Data / Panel Links : how to


I am missing something obvious I am sure so I hope someone can explain it to me please - I have two Dashboards. The first has a variable called “Environment” and I can create a URL on one of my panels to pass what look like valid details (http://localhost:3000/d/hrBf-mXZz/instances?orgId=1&Environment={DEV,PROD,UAT}) … what I cannot see is how I can then use that on my destination dashboard to set the Environment variable there?

Any pointers appreciated.

Thank you