Flowscript - removeSession() is not a function

[beyaNet Consultancy]

Hi,
I am getting the following error message in my flowscript:

org.apache.avalon.framework.CascadingRuntimeException: removeSession is not a function, with the following line of code:

cocoon.removeSession();

I know that to create a session in flowscript I do cocoon.createSession(). Could someone tell me what the correct syntax is to destroy a session in flowscript is?

Peter