PB using the name attribute of xsl:element

Hi,

I do not manage to use the element <xsl:element> as I wish it. 
I would like to use the value of an attribute to create the name of my new element.
(for instance to convert <item class="classe1"/> into <classe1>...</classe1>)

I am using it like that :

< xsl:element name="{./@name}">... </xsl:element>

Must I use a string function or a node-set function do convert my string to a QName ?

Fred