I want to write a function into controller

HI，Aicha
I want to customize a function inside the controller，
In the test，I deleted “defined('_JEXEC') or die( 'Restricted access' );”in site/components/com_visforms/controllers/visforms.php,
And I can see the verification code when i enter "http://localhost/index.php/pg?option=com_visforms&task=captcha" in the browser.
So I added the following code to site / components / com_visforms / controllers / visforms.php
public function progress(){
echo "abc";
echo "<script>alert('abc');</script>";
}
Then visit function progress through "http: //localhost/index.php/pg? option = com_visforms & task = progress“
unfortunately，The page only displays the home page（http: //localhost/index.php/pg）, without any other output information about "abc"。
Therefore, I would like to ask whether I have done some wrong settings, resulting in inaccessible function progress, how do I access my function progress
Thinks

Hi,

never ever delete defined('_JEXEC') or die( 'Restricted access' ); in a Joomla! file!!!
It is no good idea to change functions in the controller.
It looks to me, that you have no idea what you are doing, that is why it is not working.
You cannot just echo something in the controller.

Actually I added a possibility display some "work in progress" test in Visforms, which is displayed inside the page where the form was display after the form was submitted until the submit process is complete and the user is redirected to the result page. This is a feature of the latest release of the beta version 3.8.9. I think this is what you are looking for. You can enter a text, or an image (for example an animated image) as "work in progress text".

Regards,
Aicha