Download a html page using url with parameters

Question

I want to download a page from a website.

The page is located at an url like: http://www.example.com/status?param1=19439016&param2=812554&param3=140104010101

For download I use the code (downloaded from the internet):

function Download_HTM(const sURL, sLocalFileName:string): boolean;
begin
  Result:=True;
  with TDownLoadURL.Create(nil) do
  try
    URL:=sURL;
    Filename:=sLocalFileName;
    try
      ExecuteTarget(nil);
    except
      Result:=False
    end;
  finally
    Free;
  end;
end;

my call is:

 sURL := Format('%s/status?param1=%s&param2=%s&param3=%s',
             [sWeb, param1, param2, param3]);
 if Download_HTM(sURL, sLocalFile) then 
 ....

but don't work. Also I used:

 sURL := Format('%s/status?param1=%s'#38'param2=%s'#38'param3=%s',
             [sWeb, param1, param2, param3]);

but don't work. I can't insert the & character in the url. Any advice?

Now, instead of Download_HTM I tried the bellow function (from a stackoverflow example):

function GetURLAsString(const aURL: string): string;
var
  lHTTP: TIdHTTP;
begin
  lHTTP := TIdHTTP.Create(nil);
  try
    Result := lHTTP.Get(aURL);
  finally
lHTTP.Free;
  end;
end;

but I receive: Socket error 10014 - Bad address I'm sure that my address is corect because when I put it on the internet explorer I receive the corect html page.

When I show the sURL variable with the command ShowMessage(sURL) I can see the entire url but without the & character and the character p from the param3 word is underlined (the p character follow after the last & character from the URL) and the behavoir same to be like when I use & to create a shoertcut on a menu caption !