I had thought it was #Machiine# but that craps out the kaseya services.
I'm running an executePowershell command with this arguement.
Set-Service –Name SAVService –Computer "Machine" –StartupType “Automatic
#vMachine.MachName# is what you can use.
I use getVariable "Machine.Group ID" to "MachID" which then reference as #MachID# in my procedures.
You can try "Machine.Gorup ID" in a getVariable statement.
Or just drop the -Computer parameter altogether. Set-Service like most powershell cmdlets that can target other machines default to the local machine if not specified.