this simple scripts allows you to change the common properties of all vray lights in the scene. works with Vray light Plane,Vray light dome,Vray light sphere,,Vray light mesh
hope you find this useful
tested in 3ds max 2013.. should work in lower versions of max
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*just drag the script to your 3ds max window.. you can find the scripts in cui-category-ebbmaxscript
*you may add a shortcut,add to menu,quad, etc.