How to change title custom input activity?

Hi…
I using custom input for display my form, like this image

how to change the title ?

i tried this html

<!DOCTYPE html>
<html>
  <head>
    <title>TITLE CUSTOM INPUT</title>
  </head>
  <body>
    <h2>Simple Form</h2>
    <form action="/action_page.php">
      First name:<br />
      <input type="text" name="firstname" id="FirstName" />
      <br />
      Last name:<br />
      <input type="text" name="lastname" id="LastName" />
      <br />
      Age:<br />
      <input type="text" name="age" id="Age" />
      <br /><br />
      <input type="submit" value="Submit" id="SubmitButton" />
    </form>

    <script>
      document.getElementById("SubmitButton").onclick = function () {
        var FirstName = document.getElementById("FirstName").value;
        var LastName = document.getElementById("LastName").value;
        var Age = document.getElementById("Age").value;
        var OutputString = '{"First_Name":"' + FirstName + '",' + '"Last_Name":"' + LastName + '",' + '"Age":"' + Age + '"}';
        window.external.setResult(OutputString);
      };
    </script>
  </body>
</html>

if cannot change the title, how can i hide the control bar (icon, address, minimize,maximize,close) ?

thanks for help

Hi @Iwan_Kurniawan2 ,

Explain more about your question, it will be better give the solution.

Thanks,

@Iwan_Kurniawan2
you need to add title tag inside head tags NOT body tag

move your … into section as shown below
image

thanks for respon, i edited my post

thanks for respon, but its not working :frowning:

@Iwan_Kurniawan2

Did you happen to try the taskTitle field

Cheers

thanks for respon,
what taskTitle field’s mean ?

@Iwan_Kurniawan2

I hope you are using create form task right?

Cheers