RE: How to populate choices for a Combobox depending on the value selected in other combobox Sushil Ukalkar 30.Jan.07 09:24 AM a Web browser Domino Designer -- @Formulas Release 5Windows 2000
Best way is to have a sepearte Keyword form and for storing the relationship between Category and Sub Category..
This view will have 4 Category documents with corresponding SubCategories stored in it..
In main form for first combo box use DBColumn and for second combox use DBlookup and key will be value of first column.
Refresh the document on exit of the first combox value selection and use @Is error for both the field values to handle null values..
Hope this will help you..