Hi. I need to perform some subtraction on some variables. At first my
XSLT 2.0 code looked like this:

        <xsl:variable name="bboxTokens" select="tokenize(@bbox,',')"/
>
        <xsl:variable name="bboxWidth" select="$bboxTokens[3] -
$bboxTokens[1]"/>
        <xsl:variable name="bboxHeight" select="$bboxTokens[4] -
$bboxTokens[2]"/>


And the error was that the datatype didn't support the operator -
(minus). So I added the as= attribute to declare the datatype:


        <xsl:variable name="bboxTokens" as="decimal" select="tokenize
(@bbox,',')"/>
        <xsl:variable name="bboxWidth" as="decimal" select="$bboxTokens
[3] - $bboxTokens[1]"/>
        <xsl:variable name="bboxHeight" as="decimal"
select="$bboxTokens[4] - $bboxTokens[2]"/>


This time the complaint was an unknown datatype. So I put this:


        xmlns:xdt="http://www.w3.org/2005/xpath-datatypes"


in the declaration and this in the main code:


        <xsl:variable name="bboxTokens" as="xdt:decimal"
select="tokenize(@bbox,',')"/>
        <xsl:variable name="bboxWidth" as="xdt:decimal"
select="$bboxTokens[3] - $bboxTokens[1]"/>
        <xsl:variable name="bboxHeight" as="xdt:decimal"
select="$bboxTokens[4] - $bboxTokens[2]"/>


Still an unknown datatype. What am I doing wrong? I'm using Altova
2009 XSLT 2.0 Engine (command line).


TIA---