Hi guys, I have a datasheet form called "frm_bookings" which has 2 Date fields called "Signed In" and "Signed Out". Each of these fields has a On_Double Click event which then Opens a calendar form called "frm_calendar", this works just fine.
Here's the problem, if "frm_bookings" is used as a subform on a form called "frm_bookings1" and I try to use the double click feature to open up the calendar form, it does not come up. Instead I get the following: "[94] invalid use of Null"
Any clues??[b]

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