edit attributes from lisp

[x11start]

I have to create a lisp that allows me to select blocks with attributes already inserted in the drawing and depending on the location or value of a given attribute, perform the editing of other attributes of the same block.

by hand I would go to the block that I care about with _ddatte and I would change the attribute/the attributes I need; with the lisp I suppose it is necessary to enter the group codes (maybe 330) and go to discover the code that contains the attribute that interests me .... the problem is that I failed to locate the correct group codes .... or maybe there are simpler methods...

Can someone help me? .... maybe gp. who had already helped me in a similar case: http://www.cad3d.it/forum1/showthread.php?t=14092 (find with autolisp the texts in the blocks) ...

 

[GP.]

in this debate http://www.cad3d.it/forum1/showthread.php?t=17014 I had attached an example that I believe is your case, for the position the attribute uses dxf 10 --> (setq p1 (cdr (assoc 10 (entget ent1))))

 

[x11start]

Thank you! I'll watch it carefully!