Schwede -
There was a bug in a utility module that the Database Options dialog box uses to display the expression edit control and the f(x) button combination. This has been fixed in 3.1. The problem is that if you specify an expression using the f(x) button, the expression does not get committed propertly in the text control next to the f(x) button. If you instead type the expression in the text box, or use the f(x) and then edit the text in the text box, the problem does not occur. This occurs with the VB dialog boxes only, database options and the IVI step types. Sorry for the inconvenience.
Scott Richardson