JDAM quantity and Harpoon fixpoint

[JJK]

1. What is the qantity "QTY" for? I don`t see any purpose for it.

2. What is the "FXP" for? The Harpoon  heading on the HSI changes when i fly further, but when i  shoot the Harpoon it flies in the ditection where i entered in the UFC

[Foka]

1. It's for ripple drop. QTY sets how many bombs will drop on one pickle press.