Hi, the issue is that we have several different DHCP servers for several different sites so that would not work. Fortunatelly I was able to figure this out getting the network vlan data 1st and then putting it in a variable and then concatenate the new IP. this is a snip of code, my logic can be a little weird, im just starting with this :).   #This gets the current Network Vlan values $request = Invoke-RestMethod $endpointuplink -Method 'GET' -Headers $headers #This code will add the "" to the DHCP IP values and format it for the API call to work correctly [string]$servers = $null [Array]$servers = $request.dhcpRelayServerIps [Array]$current = '"{0}"' -f ($servers -join '","') if ($servers -contains $newserver){ write-host("DHCP IP is duplicated") }else { $body = @" { `"dhcpRelayServerIps`": [$current,"$newserver"] } "@ $response = Invoke-RestMethod $endpointuplink -Method 'PUT' -Headers $headers -Body $body $response | ConvertTo-Json ... View more