Is it possible to use a variable in the site id field?

[alucardu]

I want to use a variable in the site id field but it looks like the plugin is taking the variable as a string:

2021-04-23T07:51:47.2180471Z [command]C:\WINDOWS\system32\cmd.exe /D /S /C "C:\Users\alucardu\AppData\Roaming\npm\netlify.cmd deploy "--auth=Ed-NN2owB9OHvkfqg9MJs5iuoPdEIkPMsnGmf***" "--site=$env:netlifySiteId" "--dir=C:\agent_work\r1\a\flexwerker" --prod "--functions=C:\agent_work\r1\a" --json" 2021-04-23T07:51:49.7013050Z » Error: Site not found

see site=$env:netlifySiteId"