Solved AttackSpeed in Perfect items upgrade

[Advent]

http://otland.net/f81/perfect-items-upgrade-2-0-slot-sytem-89450/

Point : I am using Perfect Upgrade script and I want to add Attack Speed option for weapons and bows/crossbows only.
I tried creating new functions and locals only to try if it will work but it doesn't.

I am getting an error :

[26/04/2013 21:58:58] [Error - Action Interface]
[26/04/2013 21:58:58] data/actions/scripts/other/upgrade.luanUse
[26/04/2013 21:58:58] Description:
[26/04/2013 21:58:58] data/actions/scripts/other/upgrade.lua:46: attempt to call global 'setItemAttribute' (a nil value)
[26/04/2013 21:58:58] stack traceback:
[26/04/2013 21:58:58] data/actions/scripts/other/upgrade.lua:46: in function 'setItemAttackSpeed'
[26/04/2013 21:58:58] data/actions/scripts/other/upgrade.lua:145: in function <data/actions/scripts/other/upgrade.lua:106>

You don't have to explain me what does it mean.

function getItemAttackSpeed(uid)
		return getItemAttribute(uid,'attackspeed')
	end
	function setItemAttackSpeed(uid)
		return setItemAttribute(uid,'attackspeed',name)
	end

These are my functions to get and set attack speed. When I use /attr set attackspeed 5000 on item, it gives item one hit per 5 sec. When I use /attr set attackspeed 500 on item, it gives me like 2 hits in one sec. It all works but when I use upgrade item it doesnt. Do I call wrong global ? Where is my mistake ?

I wanted it to increase Attack Speed -250 ms per 1 lvl. I used it like SetAttackSpeed (GetAttackSpeed-250*level -- weapon level --)

Can you help me somehow ? Explain ? I am going to try it other way but I am looking for your assistance.

- - - Updated - - -

I changed functions into

function getItemAttackSpeed(uid)
		return getItemAttribute(uid,attackspeed)
	end
	function setItemAttackSpeed(uid)
		return setItemAttribute(uid,attackspeed)
	end

and got another error

[26/04/2013 22:20:54] [Error - Action Interface]
[26/04/2013 22:20:54] data/actions/scripts/other/upgrade.luanUse
[26/04/2013 22:20:54] Description:
[26/04/2013 22:20:54] data/actions/scripts/other/upgrade.lua:143: attempt to perform arithmetic on a nil value
[26/04/2013 22:20:54] stack traceback:
[26/04/2013 22:20:54] data/actions/scripts/other/upgrade.lua:143: in function <data/actions/scripts/other/upgrade.lua:106>

143

                                local gainAS = getItemAttackSpeed(itemEx.uid)-(250*level)
				local loseAS = getItemAttackSpeed(itemEx.uid)+(250*level)

106 ofc

function onUse(cid, item, fromPosition, itemEx, toPosition)

- - - Updated - - -

I did it alone, please close thread.