Problem with update-Insert query

Hi,

Currently I am trying to perform some DTS Transformation from Oracle DB(ODBC Driver) to Sql DB (OLE DB) as the data transfer is very huge like (9,00000 records) , I am simply using DataPump task to perform this transformation.
I am using Update and Insert query while datapump in Lookup method while running pcakage I am getting following error.
NO Value Given for One or More Required Paramter

I am using following Active X script.

'**********************************************************************
' Visual Basic Transformation Script
'************************************************************************

Function Main()
' Copy each source column to the destination column
dim Qupdate,Qinsert

DTSDestination("CUST_ID") = DTSSource("PARTY_CODE")

if(( DTSSource("Party_Code").value) =(DTSDestination("CUST_ID").value)) Then
Qupdate=DTSLookups("QueryUpdate").Execute (DTSTransformStat_QueryUpdate)

DTSDestination("C_PHONE_NO") = DTSSource("PHONE_NUM")
DTSDestination("C_ZIP") = DTSSource("PIN_CODE")
DTSDestination("C_CNTRY") = DTSSource("CNTRY_CODE")
DTSDestination("C_CITY") = DTSSource("CITY_CODE")
DTSDestination("C_ADDR2") = DTSSource("ADDR_2")
DTSDestination("C_ADDR1") = DTSSource("ADDR_1")
DTSDestination("LOC_DESC") = DTSSource("PARTY_NAME")
DTSDestination("BRANCH_ID") = DTSSource("BRANCH_ID")
DTSDestination("BANK_ID") = DTSSource("BANK_CODE")
else


Qinsert=DTSLookups("QueryInsert").Execute (DTSTransformStat_QueryInsert)

DTSDestination("C_PHONE_NO") = DTSSource("PHONE_NUM")
DTSDestination("C_ZIP") = DTSSource("PIN_CODE")
DTSDestination("C_CNTRY") = DTSSource("CNTRY_CODE")
DTSDestination("C_CITY") = DTSSource("CITY_CODE")
DTSDestination("C_ADDR2") = DTSSource("ADDR_2")
DTSDestination("C_ADDR1") = DTSSource("ADDR_1")
DTSDestination("LOC_DESC") = DTSSource("PARTY_NAME")
DTSDestination("BRANCH_ID") = DTSSource("BRANCH_ID")
DTSDestination("BANK_ID") = DTSSource("BANK_CODE")
End IF
Main = DTSTransformStat_OK
End Function
********************************************************************
My update query in Lookups is :-(QueryUpdate)
UPDATE Abc
SET BANK_ID = '?', BRANCH_ID = '?', LOC_DESC = ' ?', C_ADDR1 = ' ?', C_ADDR2 = ' ?', C_CITY = '?', C_CNTRY = '?', C_ZIP = '?', C_PHONE_NO = '?'
WHERE (CUST_ID = ' ?')

Insert is also same except give set I am suppling corresponding values in through wildcard.

Please help me regarding this.