AE Item Request

export = peripheral.wrap("right")
itemstack = {id=4,qty=1}
 bridge = peripheral.wrap("left")
while true do
herp = 0
derp = 0
dmgvar = 0
amount = 0
itemstack = {id=4,qty=1}
e, msg, d, b, c = os.pullEvent("chat_command")
    for word in msg:gmatch('[^%-]+') do
        value = tonumber(word)
        print(textutils.serialize(itemstack))
        itemstack.id = value
        if string.find(word, ":") then
            itemstack = {id=4,dmg=0,qty=1}
            print(word)
            for whut in word:gmatch('[^%:]+') do
            derp = herp
            herp = whut
            end
            itemstack = {id=4,dmg=0,qty=1}
            if string.find(herp, "~") then
                for nope in herp:gmatch('[^%~]+') do
                dmgvar = amount
                amount = nope
                end
                itemstack.qty = tonumber(amount)
                itemstack.dmg = tonumber(dmgvar)
                itemstack.id = tonumber(derp)
            else
            print(derp)
            print(herp)
            itemstack.dmg = tonumber(herp)
            itemstack.id = tonumber(derp)
            end
        elseif string.find(word, "~") then
            itemstack = {id=4,qty=1}
            for nope in word:gmatch('[^%~]+') do
                dmgvar = amount
                amount = nope
            end
            print(amount)
            print(textutils.serialize(itemstack))
            itemstack.qty = tonumber(amount)
            print(textutils.serialize(itemstack))
            itemstack.id = tonumber(dmgvar)
        end
        print(textutils.serialize(itemstack))
        export.extractItem(itemstack,"down")
    end
end