Anyone see a routine in their travels that does this? (block numbering)

[ILoveMadoka]

Not sure how to even frame the question...
Given a block like this:

 

If it is inserted and is the first instance, change the text to 01, each additional insert will be numbered based upon the total number of that particular block being inserted.
Can the text be text/mtext or would it have to be an attribute?
I suppose it would search the block table when it is run and number additional inserts based upon the total existing in the drawing at the time of the insert.
Has anyone seen such a routing/proggie that does that?

If I used diesel (or other) could the numbers update automatically if one is deleted either by regen or some other trigger?
Based upon their order within the blocktable?

I do not even know how to search on something like this...

Since I figured something would have to be written, I asked here but other forums might know of solutions..
 

[ILoveMadoka]

Should have known....

LeeMac