SAP Business Connector Access XSLT outputparameter

I am using SAP BC 4.7. I am using the service: “pub.sap.xslt.transformation:XSLTransformation” and try to access the XSLT processor’s output parameters to retrieve values from the XSL transformation step. I followed SAP’s documentation and added a
namespace declaration xmlns: Output=“java://com.sap.xslt.extension.Output” and a global parameter declaration like <xsl:param>.

How do I now invoke the object’s put methode to store output parameter?
Any coding examples are appreciated.

Best regards,
Wolfgang