MQL5 web call not refreshed.

[XIn Li]

I have following codes in my MQL5 EA and web call httpGET is not refreshed even there is a new records. please help.

  string get_data= "";

  string response="";

  StringConcatenate(get_data,webpage_link,"to_MT4.php?get=1");

   response = httpGET(get_data);

  Print("response: ", response);