Use of Variables

I have created a couple of variable for use with the URLACL stuff - I created a variable for http and https with the url as http://+:9060/ and https://+:9050/

When I then use these variables in the Network - Add URL Reservation process I assign my variables to the URL but it fails because it ends up being user=#{myvariablename}

Does this not work for this process? - its the same with the user account - I see #{myuser} instead of the value for my username variable

Ignore this please I hadn’t defined the variables for one of my environments - pilot error.