Hi Oliver,
I am not sure what other information you are refering to in addition to the one I quoted in my last post on Item Filtering. Can you shed some light on that, emailing your information to support (see my email address in my signature below). I may have missed out of the conversation, or just can't find it.
When you are talking about large amounts of data, how many records or items in the combobox are you talking about ?
Palli