xml - Use variable ouside of scope in xslt -

here have small snippet has variable num_cpu under if condition, not able access outside if condition tag. how solve this?

how make num_cpu global can use multiple times outside loop?

    <xsl:for-each select="t:container">         <xsl:if test="@name = 'cpu'">             <xsl:variable name="num_cpu" select="t:leaf/t:value/@value"/>        </xsl:if>        <xsl:value-of select="$num_cpu"/>     </xsl:for-each> 

to define global variable, place <xsl:variable> element child of root stylesheet element.

in addition answer question in comment. how change value in if condition: xslt not imperative programming language can change value of variable.

if want pass value 1 template can use parameter e.g.

code snippet

<xsl:template match="foo">    <xsl:apply-templates select="bar">      <xsl:with-param name="pos" select="100"/>    </xsl:apply-templates>  </xsl:template>    <xsl:template match="bar">    <xsl:param name="pos"/>    <xsl:value-of select="$pos"/>  </xsl:template>