I am trying to select a page field using umbraco.library:GetXmlNodeById. If i type an id e.g. 1454 it works, if i try to pass a macro param say $myId to it nothing displays on my page.

  <xsl:param name="scamId" select="/macro/scamId"/>

<xsl:value-of select="$scamId"/>

<xsl:value-of select="umbraco.library:GetXmlNodeById(1454)/scamHeading"/>

    <xsl:value-of select="umbraco.library:GetXmlNodeById($scamId)/scamBody"/>

The top statement returns the scamHeading

The bottom statement doesn't return anything

The value of scam id does return the number i just want to use the number from the variable as the parameter for GetXmlNodeById($scamId).