Hi i'm working with xsl 1.1 and i have troubles with page-sequence-master

i need 1 footer for only pages or if have more than one page, first and last, so i use

<fo:page-sequence-master master-name="document" >
<fo:repeatabl e-page-master-alternatives>
<fo:condition al-page-master-reference page-position="only"
master-reference="a4on ly"/>...