XSLT Function

[abhijit]

Have you ever tried to use a function within an XSL transformation?
In my case, I followed an online tutorial and came to a conclusion that some functions work, while others don't.

  String length: <xsl:value-of select="string-length(artist)" />
                    <br />
  Current Date: <xsl:value-of select="current-dateTime()" />                    
                    <hr /> 

In this case, string-length(artist) worked for me, but as soon as I put in the current-dateTime, it messes up the output. Can anyone tell me how can I get the XSL to output the current-dateTime()?