Haven't figured how to record the date in a date field when someone clicked the checkbox "on:"

For the sake of argument lets assume you want the checkbox to set the Date field to the current date. Create a Value List named something like SetCurrentDate with the only value being "Y" (without the quotes). Next create a script called SetCurrentDate:

If [MyTable::MyCheckBox ; "Y"]

-Set Field[MyTable::MyCheckBox ; ""]

-Set Field[MyTable::MyDate ; ""]

Else

- Set Field[MyTable::MyCheckBox ; "Y"]

- Set Field[MyTable::MyDate ; Get(CurrentDate)]

End If

Then set the Field Format for you checkbox to "Check Box Set", Display Values from SetCurrentDate. Set your checkbox field to a button to perform script SetCurrentDate.

*Edit: I re-read your post and maybe you want this value stored in a related table to track all changes to the checkbox?

Make your date field an auto-enter calc with the following calc:

Case (not IsEmpty (your checkbox field) ; Get (Currentdate) )

This will always enter the date when someone checks the checkbox. When they uncheck it, it removes the date.

Right, never even thought about the auto-enter calc. A little more straight forward might be - If(IsEmpty(CheckBox);"";Get(CurrentDate))

If(IsEmpty(CheckBox);"";Get(CurrentDate))

You don't need the null result with vs. 7.

We don't know what the checkbox 'on' represents. It might be a 1 toggle. I always have a 'Select' value list which simply contains a 1 so I can use the same value list for many on/off toggles on fields.

If using a 1, all you need is:

If(Checkbox; Get(CurrentDate))

On that Auto-Enter calculation - if you want the current date to appear when checked but disappear when unchecked, you must remember to unclick the checkbox below the Auto-Enter by Calculation that says, "Do Not Replace Existing Value." If you want the date last checked to remain, leave this clicked.