Numbering an Array

So I have a grid pattern of holes. One direction is numbers 1,2,3 and so on depending on number of holes. The other direction is A, B, C etc depending on number of holes.

Is there a way to connect the array to the lettering in such a way that if the array pattern is changed that the numbering also updates? For instance if I have the array at 1,2,3 and A,B,C 3X3 and then change it to 4X4 the lettering will change to 1,2,3,4 and A, B, C, D? The lettering is in a sketch.

Macro feature would be a neat way of tracking pattern instances and updating sketch numbering accordingly.

I’ve still not found a good solution to this but I suspect a macro would work. 1,2,3 etc works fine, A, B, C…no go.

Would you be able to elaborate on how you are getting the numbering sequence now?

Yep,

https://www.cadforum.net/viewtopic.php?f=17&t=485&p=5723&hilit=ARRAY#p5723

Very slick. Kudos to that creativity!