Any better way around Duplicate Definition problems?

[RhoSigma]

Simply replace the ReDim a$(0) under the Main label (or whereever the first definition of the array appears, maybe in a .bi file if it's for a library) with a Common Shared a$().

As example take a look into my libraries collection, sub-folder "RS-Includes" in files "memory.bi/.bm", here the used array "gpMemory&&()" is COMMON SHARED in the .bi and the routines in the .bm file use it and REDIM it as required.