How to make a print brick change a letter?

[d]

How can I make a 1x1 print that says "A" make it say "B"?

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[Blockhead31735]

http://orbs.daprogs.com/rtb/forum.returntoblockland.com/dlm/viewFile76e4.html?id=2933

[SuperSuit12]

Oh hey it's pie crust
why is it weird to see their posts off RTB?