Hey All,
I have a logic that says :

if $a found , then use it, else use $b.
I can do this like

<xsl:value-of select = "if(string($a)) then $a else $b"/>

Can I do something like
<xsl:value-of select = "($a,$b)[1]"/>

Not sure , when this will work and when it wont. Or will it work at all..