Mapping load with Hash128 function

[mellerbeck]

I'm trying

Item_List:

Mapping LOAD

          Hash128("Item No","Pack Code") as ItemNo_PackCode_Key,

          "Item Net Weight"

    ;

SQL SELECT *

FROM [dbo].[Qlikview_ItemTable];

InventoryStockStatus:

LOAD

           ApplyMap('Item_List', Hash128(Item,PackCode), 0) as "Item Net Weight"

           ,Item

FROM

(qvd);

But it doesn't seem to like it, if I instead use say an "Item No" & ':' & "Pack Code" it works just fine

Anyone ever use a mapping load with the hash, am I missing something?