call template with returned value

[nudayasankar]

Hi all,
I need to convert an XML using XSLT transformation. I want to call a template (with-param) in a loop. Intially I can call it with a default value. That template returns a value which should be passed in the next iteration. How can I achieve this?

Example:
Input:
<parent>
<commonChild><value>1000</value></commonChild>
<child1><value1>100</value1></child1>
<child1><value1>50</value1></child1>
<child1><value1>75</value1></child1>
</parent>

my output should be:
<parent1>
<commonChild><value>900</value></commonChild> (initial value - child value)
<child1><value1>100</value1></child1>
<parent>
<commonChild><value>850</value></commonChild> (previous value - child value)
<child1><value1>50</value1></child1>
<parent>
<parent>
<commonChild><value>825</value></commonChild> (previous value - child value)
<child1><value1>25</value1></child1>
<parent>
</parent1>

Thanks
Uday.

[jkmyoung]

I'm not sure what you're doing with your parent nodes, as they don't seem to be closed off.

<xsl:template match="commonChild">
  <xsl:apply-templates select="following-sibling::child1">
    <xsl:with-param name="value" select="value">
  </xsl:apply-templates>
</xsl:template>
 
<xsl:template match="child1">
<xsl:param name="value" select="0"/>
  <parent>
    <commonChild><value><xsl:value-of select="$value - value1"/></value</commonChild>
    <xsl:copy-of select="."/>
  </parent>
  <xsl:apply-templates select="following-sibling::child1">
    <xsl:with-param name="value" select="$value - value1"/>
  </xsl:apply-templates>
</xsl:template>