Mine

function main()
{
	variable int Idx = 1
	variable string Itm1 = "Sturdy Junkbox"
	;variable string Itm = "Reinforced Steel Lockbox"
	variable string Itm2 = "Buzzard Talon"
	
	do
	{
		if ${Item[${Itm1}].Field[${Idx}]} != ${Item[${Itm2}].Field[${Idx}]}
		{
			echo "${Idx}: ${Item[${Itm1}].Field[${Idx}]} ${Item[${Itm2}].Field[${Idx}]}"
		}
	}
	while ${Idx:Inc} <= ${Item[${Itm1}].Fields}
}