Re: xsl:if / variables / fancy / confusing

I was thinking:

<select name="attribute_{attribute_id}">
<xsl:if test="/configuration/details/errors/attribute_{attribute_id}"><xsl:attribute name="style">xyz</xsl:attribute></xsl:if>

but it doesn't like that AT ALL.

<xsl:if test="/configuration/details/errors/*[local-name() = concat('attribute_', attribute_id)]">
  <xsl:attribute name="style">xyz</xsl:attribute>
</xsl:if>

Regards,
Geert