[Xsltforms-support] Dynamic UI binding expressions

[Mats E. <mat...@ya...>]

Hi!
Making progress with the use of XSLTForms, again, great tool!!
Question: does XSLTForms support dynamic UI binding expressions (XForms 1.1 specification chapter 7.4.3)?
Background for my question is that I have an xf:upload control that is bound to the last file element in a files list (i.e. ref="files/file[last()]"). When a file has been uploaded with the control, an xf:insert action inserts a new file to the end of the list. Even after an explicit call to xf:rebuild/xf:refresh after the xf:insert, the xf:upload control remains bound to the original file element, even though this element is no longer last in the list! I would need it however to bind to the new last element in order for my form to work!
Grateful for any clarification and help!
Thanks,Mats