xsl:value-of select with $varibles

I have problem with returning the value from a specific element from a varible and I would like som help. This is my xslt:


I would like to get the value from $model/model/instance/ any element matching {@ref} but I don't know how to write it.

edit 1:
If I'm writing

I'll get value="190" for all elements

edit 2:
I have tried to move the varible into the orignal xml-file but it doesn't work either. I think there might be a problem with the xpath expression and the dynamic @ref. Is there a workaround for the problem?

Best Regards,

Örjan

<xsl:template match="input">
<xsl:variable name="AttValue"><xsl:value-of select="$model/model/instance//{@ref}"/></xsl:variable>
<input type="text" id="{@ref}" name="{@ref}" >
<xsl:attribute name="value">
<xsl:value-of select="$AttValue"/>
</xsl:attribute>
</input>
</xsl:template>

I'm afraid it doesn't work and I think it depends on that xpath 1.0 cannot take dynamic expressions like {@ref}.

My problem is that I would like to transform a xform document to xhtml but since it's not possible to parse to branches a the same time eg. model&control it's hard if not impossible to make the transformation with xslt. I'm curious if you have any other ideas of transforming xforms to xhtml.