failing to link combo-boxes

[rienk]

Using: Microsoft Access 2002 on Windows XP.

I've been working on two combo-boxes following this faq:

http://www.tek-tips.com/faqs.cfm?spid=702&sfid=681

I've got two combo-boxes (stored and shelve, resp.) in a table/form called materials. Whenever I update the stored combo-box I want the shelve combobox only to display the related values (yes, I linked shelve to stored). Whenever I trie to update the stored combo-box, I get a Enter Parameter value request stating "Forms!material!stored.Value"... what's wrong?

Thank you...