TWebClientConnection - httpPOST identifier not found !

Hi, wish to start using the TWebClientConnection ,
fill in the properties :

  1. command : httpPOST
  2. postData : { "id": 1, "jsonrpc": "2.0", "method": "call", "params" : {"args": ["v14c_demo1_test", 2, "admin", "res.users", "read", [1]], "method": "execute", "service": "object"} }
  3. http://localhost:18080/jsonrpc

tested with POSTMAN client, it works but with TMS Webcore vscode, when i tried to set the Active to True during design time , the pop up sentry error windows!
But if i run it straight ... image , please advice, is it missed some unit ?

thanks,
kalmen

Add the unit WEBLib.REST to the uses list.