Keyboard DEL key alternative

[Mohammad Abdullah]

1. Del Key (Delete) of my laptop keyboard got malfunctioned and not working now, earlier working.
2. Now I need to assign another shortcut through obkey (http://notesalexp.org/xenial/main/o/obkey/) as I am using Lubuntu having openbox.
3. I need to put command for this shortcut. Like when I press F7, it works as Del key of my keyboard.

OS: Lubuntu 16.04 LTS

Thanks,

Abdullah,

India