Board Thread:Questions and Answers/@comment-24215177-20131125232239/@comment-14600979-20131126045806

First, take the time and go back over your spelling. Now, let's see what I can do for you. Variables can be stored in any combination not starting with a number and not taken by an existing function or command. For example, STUFF is okay but 1PSTUFF is not, as well as SPREAD. Variables are set and read with = and ==, respectively.

AP=5 sets AP to 5, while AP==5 won't do anything. Well actually, it will give you a syntax (wording or formatting) error. If you say AP=BGX,  the value of AP will become that of BGX, at least, until you do something to AP. Now if we do AP=BGX-2, AP will be whatever the value of BGX minus two is. Hope this helped.