# How calculate field on a report

On a repost I have 4 fields.  They are:

ShipDate (date field)
ReschDate (date field)
LastDateShpd (date field)
OnTime (text field)

There are different scenarios that need to be examined.

1) If LastDateShpd  and ReschDate are not null and ReschDate > LastDateShpd then OnTime has to be "N"

2) If ReschDate is null and ShipDate >  LastDateShpd then OnTime has to be "N"

3) If ReschDate is null and ShipDate <=  LastDateShpd then OnTime has to be "Y"

How would I code the onprint event of the detail section of the form?  Note that OnTime is not a bound field
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Commented:
You don't say anything about ShipDate being empty so the logic below may be incomplete.  I also added the "Y" part of the first condition since you really need to do "something".
``````If IsDate(Me.ReschDate) Then
If IsDate(Me.LastDateShpd ) Then
If Me.ReschDate > Me.LastDateShpd Then
Me.OnTime = "N"
Else
Me.OnTime = "Y"
End If
End If
Else
If Me.ShipDate> Me.LastDateShpd Then
Me.OnTime = "N"
Else
Me.OnTime = "Y"
End If
End If
``````
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Author Commented:
Nice!  Very much appreciated Pat.
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