how to set truncate_max_range to false when using cytofcore.updatepanel fucntion

Hi
Thank you so much for this great package. The cytofcore.updatepanel  function works but it truncates values in the output relabeled fcs files. How do I set truncate_max_range to false when running cytofcore.updatepanel? Also, is there a way to set other parameters for the readfcs part (e.g. transformation = false or true) when using the  cytofcore.updatepanel  function?
Thanks