Hi ijaz
Could you give me a little more info about the steps that your doing to create the wavelet package transform?
In the mean time here are some materials to reference that may shed some light on what you want to do.
http://www.ni.com/pdf/manuals/371552a.pdf
http://zone.ni.com/reference/en-XX/help/371419D-01/lvwavelettk/lvwavelettk/
http://zone.ni.com/reference/en-XX/help/371419D-01/lvwavelettk/lvwavelettk/