Creating a new network interface via rpc json ubus

For Developers
1

Hello, I'm new to using json rpc ubus and I'm having trouble creating a new simple network interface. I am creating the new network with the following json format:

{
     "jsonrpc": "2.0", "id": 1, "method": "call", "params":
     [
         "ffd5293caf4a20fda9ee581f6de4acd5", "uci", "set",
         {
         "config": "network",
         "section": "new_net",
         "type": "interface",
         "values":
         {
         "type": "bridge",
"proto": "none",
"ifname": "eth0.2000"
         }
         }
     ]
}

And the result is always:

{
     "jsonrpc": "2.0",
     "id": 1,
     "result": [
         4
     ]
}

Someone could help me