my bad...wat i meant was if i wanted to turn off on multiple data on chart to do comparative study...by using radio buttons only 1 series gets turned on while i m hoping to get each one linked to separated button so which clicked either turn on or off the particular range from displaying....like say i want to do comparison of all 3 at a time or turn of maybe only book another and study pen vs pencils or turn of pencil n study pens vs books