Changing sort order via a parameter

I have a situation where I need to change from a text ordering to number 
order depending upon a parameter. I know this value at the start of the 
process, so I don't have to determine that.
I've tried the following:

<xsl:for-each test="xxx">
        <xsl:sort select="zzz">
                <xsl:attribute name="data-type">
                        <xsl:choose>
                                <xsl:when test="$A='Life'">number</xsl:when>
                                <xsl:when test="$A='P_C'">text</xsl:when>
                        </xsl:choose>
                </xsl:attribute>
        </xsl:sort>
</xsl:for-each>

Doesn't work because I'm creating an attribute on the stylesheet element.

<xsl:for-each test="xxx">
        <xsl:sort select="zzz">
                <xsl:attribute name="data-type">
        <xsl:choose>
                <xsl:when test="$A='Life'">
                        <xsl:sort select="zzz" data-type="number"?>
                </xsl:when>
                <xsl:when test="$A='P_C'">
                        <xsl:sort select="zzz" data-type="text"?>
                </xsl:when>
        </xsl:choose>
</xsl:for-each>

This doesn't work because xsl:sort is not a child of xsl:template or 
xsl:for-each. Is there some other method I have missed? I would like to 
avoid duplicating the code just to control the sort order, and this means 
also putting the code into a named template.
..dan
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Danny Vint
http://www.dvint.com


    


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