Looking for guidance about a trading bot.

So i've been thinking about making a trading bot for daily use, and ive got it sorted with some functions, but the one function that doesnt seems to work is OfferItem. Ive found 2 different ones, 1 from the old gwApi and one from another bot.
Anyone of you know any working offeritem function out there? would be lovely to get a tradebot going to spend less time in kamada :D

Code:

Func OfferItem($aItemID, $aQuantity = 1)
   If IsPtr($aItemID) <> 0 Then
	  Local $lItemID = MemoryRead($aItemID, 'long')
	  Local $lQuantity = MemoryRead($aItemID + 75, 'byte')
   ElseIf IsDllStruct($aItemID) <> 0 Then
	  Local $lItemID = DllStructGetData($aItemID, 'ID')
	  Local $lQuantity = DllStructGetData($aItemID, 'Quantity')
   Else
	  Local $lItemID = $aItemID
	  Local $lQuantity = MemoryRead(GetItemPtr($aItemID) + 75, 'byte')
   EndIf
   If $aQuantity > $lQuantity Then
	  Return SendPacket(0xC, $HEADER_TRADE_OFFER_ITEM, $lItemID, $lQuantity)
   Else
	  Return SendPacket(0xC, $HEADER_TRADE_OFFER_ITEM, $lItemID, $aQuantity)
   EndIf
EndFunc   ;==>OfferItem

Func getitemptr($aitemid)
	Local $loffset[5] = [0, 24, 64, 184, 4 * $aitemid]
	Local $litemstructaddress = memoryreadptr($mbasepointer, $loffset, "ptr")
	Return $litemstructaddress[1]
EndFunc   ;==>getitemptr



Func OfferItem2($aItem, $aAmount = 0)
	Local $lItemID, $lAmount
	If IsDllStruct($aItem) = 0 Then
		$lItemID = $aItem
		If $aAmount > 0 Then
			$lAmount = $aAmount
		Else
			$lAmount = DllStructGetData(GetItemByItemID($aItem), 'Quantity')
		EndIf
	Else
		$lItemID = DllStructGetData($aItem, 'ID')
		If $aAmount > 0 Then
			$lAmount = $aAmount
		Else
			$lAmount = DllStructGetData($aItem, 'Quantity')
		EndIf
	EndIf

	SendPacket(0xC, $HEADER_TRADE_OFFER_ITEM, $lItemID, $lAmount)
EndFunc   ;==>OfferItem2