Do you just want to append new entries to an existing array or do you want to concatenate (join) two arrays, one on the end of the other? There was a recent update which allowed array concatenation, I think.
Global A:String[]=["One","Two","Three"] Global B:String[]=["Four","Five","Six"] Global C:String[]=A+B For Local I:Int=0 To 5 Print C[I] Next