>I have a header/detail form with a grid for the detail part. One of the data field in the grid is a logical field and I use a checkbox to display its contents. However, when I click on the checkbox to set its value to true and i move to the next column, the check box looses its value (goes back to false). Why is this? How can I get this to work right?
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>If I use a textbox instead of a check box, and I enter the value "T" - true -it keeps the value of true when I move the the next column.

Try

replace (this.controlsource) with this.value in (juststem(this.controlsource))


...the good place would be .checkbox.lostfocus(), or .valid(). I have had this problem before and this is how I solved it. Just don't remember where exactly I put the line, and whether it also required a nodefault.