Since A is a global, it is already available to the function as A, you don't even need to pass it as a parameter.
Modifying a global in a function
BlitzMax Forums/BlitzMax Programming/Modifying a global in a functionThe forum is locked. These are the original blitzbasic.com forums, kept so they can still be read. No new topics, replies or edits can be made here. To join in, head over to the Blitz3D+ forums.