This tip is a response to Tips 3789, 3767, and 3679 about using the AutoCAD Gatte command to change the attributes of multiple blocks with the same name within a drawing.

I use the Properties palette for the same purpose.

I can select the blocks with the same name (no matter how many) on the Properties pallete. Scroll down to the "BLOCK: <Block Name>" to see a list with all attributes in the block. The current values will be shown on the right column. If the values of the same attribute are different for several blocks, it will say "varies."

Simply click on the field and type what you want the attribute to be changed to. Hit Enter, and all selected blocks with the same name and that attribute value will change.

You can do the same to the visibility state if the blocks have that feature.
 
I prefer this way rather than following the prompts on the Command line, which might be confusing.

Notes from Cadalyst tip review R.K. McSwain: Nick's alternative of using the Properties palette is a good idea and should work in most situations where the Gatte command would also work.