> I am not sure what you mean by "sequence number". Is that the number of
> nodes before the current in the document tree? The number of preceding
> sibling nodes? The number of preceding elements? Generally, count(...)
> is what you are looking for, for example
>
>  count(preceding-sibling::*)
>

I tried it's not working. It print 1, 2, 3 for count(preceding::tksum)+1 
then no number afterwards. fee and tksum are on the same level. There are 5 
tksum but only 3 meet the condition. But I want to print number on every 
fee. Every fee has a id match the id of tksum. Since I have to scan all fee 
item for each tksum, I didn't find an easy way to do it.

Here is part of the xslt file.  Basically I want to print all fee items with 
 >0 charge. But I want to keep linenumber as a continous sequence.

<xsl:for-each select="/ledesxml/client/invoice/matter/tksum[tk_hours>0]">

<xsl:variable name="TimeKeep">

<xsl:value-of select="tk_id"/>

</xsl:variable>

<xsl:if test="/ledesxml/client/invoice/matter/fee[tk_id/. = $TimeKeep]">

Linenumber - <xsl:value-of select="count(preceding::tksum)+1"/>

<xsl:call-template name="TKeepDetail" >

<xsl:with-param name="TKeepInfo" select="tk_id"/>

</xsl:call-template>

</xsl:if>

</xsl:for-each>