I have a ton of blocks which represent types of materials. The idea is that I will be distributing these blocks to several people. Since materials are available in different lengths, I'd like to be able to change the max distance of the distance parameters within the blocks, changing several at once. For instance, In the original block, I'm using 16' for any pine stock, 24' for steel tube, 21' for angle iron, and 20' for flat steel stock. If I move into a place that does not accommodate these lengths, however, I need to change those max distances.

What I'd like to be able to do is to select several blocks in the block reference drawing, run a lisp routine to change the max distance of the selected blocks to a new value, to be chosen by the user, and have the toolbar refresh to the new max distance.

Does this make sense?

OK, so the problem is that I don't know lisp, at all, but I think that this is the way to do this. Any help would be awesome.

Thanks!