Could not find function: resolve-uri

When I am trying to transform an XML it gives me an error

Could not find function: resolve-uri

where resolve-uri is an XPath function.

Below is my XSLT line开发者_Python百科 which uses the resolve-uri function:

<xsl:variable name="filename" select="resolve-uri(concat($dir,'/',$xmlFileName,'_',position(),'.xml'))"  /> 

Can anybody please help me.

Is it because of XSLT version difference?

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Yes, resolve-uri() is an XPath 2.0 (XSLT 2.0) function and won't work with an XPath 1.0 (XSLT 1.0) implementation.

It depends on your environment if you are able to use an equivalent extension function.