cannot update record from MSHFlexgrid..help!!!

i want to update certain records from my mshflexgrid.
but i get the error "field cannot be updated".
Why??

this is my code to update:

VB Code:

Dim i
With mshRejLot
For i = 1 To rs.RecordCount
    .TextMatrix(i, 0) = i
'mshRejLot.TextMatrix(i, 4) = Format(rs!amount, "dd/MM/yyyy")
    .TextMatrix(i, 7) = Round(rs!amount, 2)
    .TextMatrix(i, 8) = Round(rs!Origin_Cost, 2)
    'rs.Find "rs!JOB_NO = '" & .TextMatrix(i, 2) & "'"
    rs("AMOUNT") = Round(.TextMatrix(i, 7), 2)
    rs("ORIGIN_COST") = Format$(Round(.TextMatrix(i, 8), 2), "Currency")
    rs.Update
    If .TextMatrix(i, 7) = "" Then
        .Row = i
        .Col = 7
        .CellBackColor = vbRed
        .Row = i
        .Col = 8
        .CellBackColor = vbRed
    End If
    Dim k
    'For k = 1 To rs.RecordCount
    'rs.Find "rs!JOB_NO = '" & .TextMatrix(i, 2) & "'"
 
rs.MoveNext
    'Next k
Next i
End With

and this is my sql statement:

VB Code:

rs.Open "SELECT REJECT_LOT.PART_CODE, REJECT_LOT.JOB_NO, REJECT_LOT.SCRAP," & _
        "REJECT_LOT.TRANS_DATE, REJECT_LOT.REASON,REJECT_LOT.DETAIL," & _
        "(([REJECT_LOT].[SCRAP]/1000)*[Cost_Price].[Origin_Cost]) AS AMOUNT," & _
        "Cost_Price.Origin_Cost FROM Cost_Price " & _
        "RIGHT JOIN REJECT_LOT ON Cost_Price.Part_Code = REJECT_LOT.PART_CODE WHERE" & _
        "(((REJECT_LOT.TRANS_DATE)BETWEEN #" & dari & "# And #" & hingga & "#)" & _
        "AND ((REJECT_LOT.REASON)='DDI'))", conn, adOpenKeyset, adLockOptimistic

please HELP!!!!

You Cannnot update a calculated field .... 'amount '

if cannot, can u give me a way/code to update it???
dont just say cannot...
thanks..

hi Apek!

let's just say for a while the AMOUNT is not a calculated field, why is it in your code you put the AMOUNT in the grid and without changing anything you save it back?

the solution to your problem would be to include in your SELECT statement the fields that are used for the calculation of AMOUNT hide it in the grid (if you don't want the users to see it) and from whereever in your program you get the values for those fields, save it.

like this: upadte [REJECT_LOT].[SCRAP] and [Cost_Price].[Origin_Cost]
and refresh your grid