Update a RS using a flexgrid

[holly]

Hi

I have a form that contains a flexgrid and a cmd button which the
user presses to update any changes...but I have a problem
everytime I press the update cmd I receive an error (see JPG
attached)

The code I use is
[Highlight=VB]
Private Sub CmdUpdate_Click()
UpdateFlexreview

End Sub
Private Sub UpdateFlexreview()
Dim i As Integer
Dim j As Integer

With ObjRsFlex
For i = 1 To MSFlexReview.Rows - 1
.Fields("Event_Datetime").Value = i
For j = 1 To MSFlexReview.Cols - 1
.Fields("Column" & j).Value = MSFlexReview.TextMatrix(i, j)
Next j
.Update
Next i
End With

End Sub
[/vbode]

Has anyone any suggestions... the error is displayed on the
bolded line!!!!