Fxied type error

main.py

@@ -694,7 +694,7 @@ async def fastapi_add_valve(network: str, valve: str, node1: str, node2: str, di
            'node1' : node1,
            'node2' : node2,
            'diameter' : diameter,
-           'v_type' : type,
+           'v_type' : v_type,
            'setting' : setting,
            'minor_loss' : minor_loss }