is this not possible?

Hey Marius, Thanks for responding...my form has multiple comboboxes each having a value of essentially "Select a status" or "Select a type" etc..as the 0 index for each..while indexes 1 thru N are valid selections, index selection 0 will never be a valid selection since its the default prompt. Initially I tried using the ID of the combobox as an index (e.g..selection 0 is "Select a status|0") and I was planning on using that 0 for validation logic. However, I ended up needing the ID meta for another purpose related to my application downstream. Ultimately I ended up writing code that says if combobox value = "Select status" then prevent page save. However, this approach doesn't really scale all that well because I have multiple comboboxes on my form which all have different default values at index 0 (depending on the context of the combobox). However what is always true in my entire form is that index 0 of any combobox is never a valid selection, so I was hoping to access that to determine if the user actually selected a value or left the default. This type of thing is a pretty common attribute of UI elements in other programming environments so I was thinking that the controls in Xwiki might have something similar. I can certainly work around it (and I have for my current solution) but really wanted to know for future use. Thanks again for taking the time to respond, the support you guys give is SUPER valuable to me and keeps me moving forward in most cases, so I really appreciate it.