Problems with Date functions in Access 2003

D

Dogzdinner

I am trying to create a DateDiff expression but I keep getting continuous
"invalid syntax" and other messages. Tried to use the "LagTime" example in
NorthWind database and even with a tailormade expression,i.e. LagTime:
DateDiff("d", [OrderDate], [ShippedDate]), it still returns error messages.
What is the problem anyone please?
 
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