Using Value In Single Cell To Determine Multiple Data Validations From Separate Work

I am creating a Spreadsheet to work with a game which I am designing. I want to create a combat calculator which will generate formulas based on which class a person chooses to be, and their choice of weapons, armour and other equipment (makes things a lot easier for me to visualize). I have created the first worksheet which will act as the interface where users can input their character configurations and a second worksheet where all of the data is stored, included items and their values.

Assuming that on the interface I have cell A1 which will let the user select their class (Warrior, Archer, Sorcerer).
I also have cells B1 = Helmet, B2 = Body Armour, B3 = Leg Armour, B4 = Feet Armour, B5 = Hand Armour.

I would like cells B1:B5 to create a Data Validation based on the class which is selected in A1.

E.g.
IF A1="Warrior"; B1 = A list of Melee Helmets, B2 = A list of Melee Body Armour... etc
IF A1="Sorcerer"; B3 = A list of Magic Leg Armour...

I have managed to do this with the following formula, but only if the data is stored in the same sheet.
Cell B1
=IF(A1="Warrior", =meleeArmour1, =IF(A1="Archer", =rangeArmour1, =magicArmour1))
Cell B2
=IF(A1="Warrior", =meleeArmour2, =IF(A1="Archer", =rangeArmour2, =magicArmour2))

[NOTE]
=meleeArmour1 represents the range of cells where the Melee Helmets/Head Armour is stored.
=magicArmour2 represents the range of cells where the Magic Body Armour is stored.

The group cell names do not seem to work if they are on a different sheet, nor does it work if I replace the group cell name (=meleeArmour1) with the full formula (=Sheet2!A$1$:A$10$)