await Warning: "(" expected and "," found

Hi, I got a warning while using await, but the code compiles and run fine.
But I got two warnings if I use "String" behind Await(String

See sample and screenshot, please.
What can I do?
Thanks!

.
.
[async]
procedure WebButton1Click(Sender: TObject);
.
.
procedure TMain.WebButton1Click(Sender: TObject);
var
sha: TWebSHAHash;
s:String;
begin
sha:=TWebSHAHash.Create(ehSHA256);
s:=Await(String, sha.Hash('Some text'));
M_State.Lines.Add(s);
end;

await() doesn't expect the type as 2nd parameter, so please use:

s := Await(sha.Hash('Some text'));

Thanks, this fix the first Warning.
The 2nd Warning "Kann nicht als Konstantenobjekt übergeben werden" is still there. If I define a local variable than the error is "Kann nicht als Var Parameter übergeben werden". But if I look in the Source I see
TWebSHAHash.Hash(AText: string), so why I got a warning?

Thanks and best regards

Sorry, this does not work also. s does not match which String. How I can get the result as a string. Thanks!

Hi,

Can you try TAwait.ExecP instead? The following works here:

procedure TForm1.WebButton1Click(Sender: TObject);
var
  sha: TWebSHAHash;
  s: string;
begin
  sha := TWebSHAHash.Create(ehSHA256);
  s := TAwait.ExecP<string>(sha.Hash('Some text'));
  WebMemo1.Lines.Add(s);
end;