Starts the myplc service
     """
 
-    def call(self, system_type, vserver_or_root_dir_name):
+    def call(self, system_type, root_dir):
        
        start_command = " /sbin/service plc start "
        full_command = ""
 
        if system_type in ['vserv', 'vserver']:
-           full_command += " vserver %(vserver_or_root_dir_name)s exec "
+           full_command += " vserver %(root_dir)s exec "
        elif system_type in ['chroot']:
            pass
        else:
 
     Installs a myplc
     """
 
-    def call(self, system_type, vserver_or_root_dir_name):
+    def call(self, system_type, root_dir):
 
        stop command = " /sbin/service plc stop "
        full_command = ""
        if system_type in ['vserv', 'vserver']:
-           full_command += " vserver %(vserver_or_root_dir_name)s exec "
+           full_command += " vserver %(root_dir)s exec "
        elif system_type in ['chroot']:
            pass
        else: