> Can anyone tell me why the following code used to work (under VFP50) and > now, all of a sudden, gives me an error message "Operator/operandi > mismatch" ? The underlying field is formatted for datetime and I haven't > changed anything else (that I'm aware of) to cause this sudden refusal to > work syndrome! Century is set on. Thanks in advance. > > IF !EMPTY(THIS.Value) < DATETIME() > = MESSAGEBOX("You need to enter a VALID date or time",1,"ERROR MESSAGE") > RETURN .F. > ELSE > RETURN .T. > ENDIF I kinda wonder why did it work in the first place !EMPTY() will return a logical value which you compare with a Datetime value IF !EMPTY(this.value) and this.value .Signature { margin-top: 12px; color: #666666; } .Signature a { color: #666666; }