how to add text hint in to jEditText

[JanuszChmiel]

Dear programmers,
Please could someone of us send Me a code example how to add text hint on to jedit field?
Procedure SetHint (Value : String );

Do not work.
Because when I type from The body of The procedure
procedure TAndroidModule1.AndroidModule1JNIPrompt(Sender: TObject);
begin
EditText1.Hint:= 'experimental data';
EditText1.UpdateLayout();

end;
No hint text have been created.
Any tips are very welcomed.