fo:table-cell number-rows-spanned

[Bhuvnesh Sharma]

Hi,
I am facing problem in doing row-span using xsl:fo block.
actually I am creating table using <fo:table> and try to number-rows-spanned="2" which is not working .
Please help me.
for ref code snapshot is here.
===========================================================
<fo:table-row keep-with-previous="always">
<fo:table-cell padding-top="3pt" padding-bottom="1pt" padding-left="5pt" padding-right="5pt" number-rows-spanned="2">

<fo:block font-family="Arial" font-size="9pt" text-align="left">
Product
</fo:block>
</fo:table-cell>