I am trying to hit my Catalyst Functions API from Deluge using the below code snippet:

inputdata = map();
inputdata.put("Key","value");

app_response = invokeurl 
[ 
url :"my_catalyst_function_url" 
type :POST 
parameters: inputdata.toString() 
]; 
info app_response;
return "";

But I keep getting empty response from the API request. Can someone help me resolve this?