Array dimension. If lower is omitted
then the lower bound is zero or one depending on the Option
Base setting. (The lower bound of an array element in a Type
definition is not affected by the Option Base setting.) upper
must be at least as big as lower.
Dim A(100 To 200) '101 values
Note: For ReDim the lower and upper may be any valid expression. Otherwise, lower and upper must be constant expressions.