i thought the [space] character broke the incoming string into Elements (of an array) - is this not the case?
The space character does break the string into elements... but your example "2,3,4 32,0,0, 3,16,16.." shows commas and not strings as separators. You can configure Messenger to work with commas instead if you wish.
Even if you sent "2 3 4 32 0 0 3 16 16...", you could not use copyString to retrieve the individual elements (because copyString copies everything as a string as its name implies). You would use readInt instead to read each integer separately.