bounding box display

Support Basics & Interface
1

hi, how can i assign to a lot of objects the display option bound? i have 10000 spheres and i can’t do manually each one…

2

Choosing Bounding Box display?

http://i1135.photobucket.com/albums/m626/cabby24/Blender%20Pics%202011/bb_display.png

3

yes, i know, but i want to see only the object i select.all at once