how to use functions in xpath (like /Row[position()]/Cell?

[sslav]

for example I have a xpath\[code\]<xsl:value-of select="/*:ResultSet/*:Row[1]/*:Cell"/>\[/code\]It returns correct value. But how can I use \[code\]position()\[/code\] instead of const value, like:\[code\]<xsl:value-of select="/*:ResultSet/*:Row[position()]/*:Cell"/>\[/code\]this doesn't work(