Well, i don't understand how you shoose the items you want to pick up, but, you could use "Show choices" option...
"Do you want to pick up Soldier's Armour?"
Show choices
IF Yes
add 1 Soldier's Armour
IF Not
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"Do you want to pick up 2 potions?"
Show choices
If Yes
add 2 potions
IF no
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ETC, ETc