Custom Transformation Properties
Use this dialog box to view and edit the properties of the custom transformation. This dialog box appears only if you loaded a custom transformation into Data Transformation Services (DTS) Designer and did not write your own user interface for the transformation.
The properties listed in the dialog box are specific to how the transformation was written, as is the availability of the properties for editing. To edit a custom transformation property value, click on the Value cell for that row in the table and type the new value.