Doru,

I don't think, it's a typo, otherwise it would be fixed already. Something else is going on here, but we just can not see it. I suspect, that another method (form's or other controls) changes value in this textbox.

I didn't insist on other ways, just showed other alternatives for the future.

Yes, this thread is an example of changing light bulbs... :)

>I bet it is because of the noise...
>
>His code, typo corrected, works.
>
>If you put that code in a custom form method, say refreshList(), and call the method from list's When, Click and ProgramaticChange, the summ will always refresh.
>
>Of course, he can check how to use grids where a list is just fine, all listbox samples, read 1000's lines of code and a book or two... I guess in a long, long run it is not even a bad thing. Anything can be solved given enough time and money, but you won't get enough time or money.