You cant, its a lie.
Whoper jr is more expensive then doubble cheeseburger, only difference being is w jr has lettuce, tomatoes, mayo and one less patty.
If you order a doubble cheeseburger and try to have it your way, and add mayo, lettuce and tomato they freak out, insiting you pay more for w jr with less patty.
Have it your way is False advertising, anyone can sue the shit out of them!
Also, burgers from fast food suck, bk sucks, but once in a rare moon I've been known to eat a bk shit burger!
Politicaly speaking.