newbie question about strings and XPath expressions

Hello all, I'm new to XPath and need to find a text node in an xml document with a 
position higher than 6 and that also starts with 1 (it's an enumeration). XMLSpy tells 
me this expression is not valid, why?
<xsl:apply-templates select="text()[position()>=6] and [starts-with(string(text
()),'1']"/>
tia,
lizet


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