How can you use the keydown event for numbers? [FIXED]

mouse.KeyDown:connect(function(key)
    print(key:byte())
    if key:byte() == 49 and currentslot.Name == "Slot1" then 
    print("1")
usepotion()
elseif key:byte() == 50 and currentslot.Name == "Slot2" then 
    print("2")
usepotion()
elseif key:byte() == 51 and currentslot.Name == "Slot3" then 
    print("3")
usepotion()
elseif key:byte() == 52 and currentslot.Name == "Slot4" then 
    print("4")
usepotion() 
elseif key:byte() == 53 and currentslot.Name == "Slot5" then    
    print("5")
usepotion()
elseif key:byte() == 54 and currentslot.Name == "Slot6" then
    print("6")
usepotion()
elseif key:byte() == 55 and currentslot.Name == "Slot7" then 
    print("7")
usepotion()
elseif key:byte() == 56 and currentslot.Name == "Slot8" then 
    print("8")
usepotion()
end
end)

http://wiki.roblox.com/index.php?title=Taking_keyboard_input http://wiki.roblox.com/index.php?title=File:Ascii_Table.png

The first print I have prints the key.byte, and it works when I press a letter, but not a number. The tabled where I got the numbers from shows both letters and numbers, but the wiki doesn't mention it. Help? How could I solve this?

[Edit 2] Fixed, for bound keys that roblox doesn't want you to use (ex: i and o for camera), use keyup.