What I'm trying to accomplish with the Filter
parameter is to dynamically pass into the stylesheet a
XPath expression to be evaluated.
For example:

<xsl:param name="Filter" select="@rebate>9.99 and
@shippingMethod='Ground' and @cost<199.99"/>

<xsl:apply-templates
select="/Cat[@CatId=$Cat]/Prod[$Filter]"/>

Thanks.

--- David Carlisle <davidc@xxxxxxxxx> wrote:
> 
> <xsl:param name="Filter" select="@rebate>0"/>
> 
> 
> so Filter is the boolean value true or false
> depending on the value of
> the rebate attribute at this point.
> 
> 
> <xsl:apply-templates
> select="/Cat[@CatId=$Cat]/Prod[$Filter]"/>
> 
> If Filter is true it will have no effect but if
> Filter is the boolean
> value false then this selct will not slect anything.
> 
> either way Filter is a constant value not depending
> on the path so this
> is the same as
> 
> 
> <xsl:if test="$Filter">
> <xsl:apply-templates
> select="/Cat[@CatId=$Cat]/Prod"/>
> </xsl:if>
> 
> 
> David
> 
>
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