Depending on the field SBT either assigns a "local" variable to the control source or assigns an array element from an array that gets initialized with one "row" for each field in the table and one "column" for each attribute of the field that is tracked by SBT. I am not in front of a system now but if you need more info send another message and I'll create a more complete answer.

>Thanks for your willingness to help.
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>I am now to the point where I have a specific question for you (a pretty basic one I think).
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>I have added a date field to the POTran table and would like to add a control to the "Change/Void Purchase Orders" form class so that the user can view and edit this new field.
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>I have subclassed the form class (POPOSD) and have added a textbox control to the form (which does show up when the form is run) but I am not sure how to set the Control Source for the control. It looks like SBT uses variables or properties for the Control Source of the controls but I have been unable to determine where these are created and how to add one for my new field.
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>I would greatly appreciate it if you could shed some light on this.