Numerical Increment of specific attribute in a multi attribute block

[alxnds5]

I currently have a block with 3 attributes, lets call them A, B, C.  When I try to use a numerical increment lisp on the block the increments happen to attribute A but I need this to happen to attribute B instead. I understand the system is choosing A because it is going alphabetically but is there any way to bypass this?  I know I can simply rename the attributes but I'm looking to see if there is another way. 

[Libbya]

This doesn't have anything to do with the dynamic properties of Dynamic Blocks.  It has to do with LISP.  Because of this, it is a question that would be more appropriate on the AutoCAD Customization - Visual LISP, AutoLISP and General Customization forum.  

[vinodkl · Accepted solution]

Here is the lisp that does what you asked for and its more advanced (see attachment)

[rmarchandYXUEE]

It almost works. I need it to allow osnaps to like the center of a circle.

[rmarchandYXUEE]

SORRY! I see it now.