The j2eeLib.clearSessionAttr() system function removes the value that is associated with the specified key that you placed in session scope storage.
If a value is not found that matches the specified key, no error results.
You can place a value in session scope storage by using the j2eeLib.setSessionAttr() system function. You can retrieve the value with j2eeLib.getSessionAttr(). The value placed in the servlet's session storage is available for the duration of the client connection or until you explicitly remove it with j2eeLib.clearSessionAttr() or j2eeLib.clearEGLSessionAttrs().
j2eeLib.clearSessionAttr(key STRING in)