load-* hook for dashboard

Question

I'm trying to add a screen option to the dashboard screen.

I have a function like:

my_function() {

    ...
    add_screen_option()
    ...

}

Now, I need to know the correct action hook $hook to use hooking in my function when the dashboard screen is loaded:

add_action( "load-$hook", 'my_function' );

What should $hook be?

Answer 1

add_action( 'load-index.php', 'the_function', 1, 0 );

The load-{page_hook} hook works with the filename of the page to load.