Pack a backpack in a mission editor

[BittleRyan 10]

I tried several search functions, but I didn't know how to word it so I am just going to ask.

In the mission editor, how do I give a soldier a ruck and place magazines in it?

I know how to put it in his inventory "AddMagazine"

How would I put it in his ruck?

Major thanks in advance!

[ffur2007slx2_5 11]

this addbackpack [“US_Backpack_AT_EP1â€];
(unitBackpack this) addMagazineCargo ["30Rnd_545x39_AK",4];