iOS - make the alert Dialog work

[pboese]

I can't seem to figure out, how make the alert Dialog work

https://nativephp.com/docs/mobile/1/the-basics/dialogs#the-alert-dialog

Dialog::alert('Title', 'Message');

I get the error that it requires 4 parameters, but only two are documented. I need a dialog to confirm the deletion of an item.

Thanks for any help