对于用户定义的函数中的范围参数，只有将其作为变体类型处理时，才与极限速度兼容。例如，工作表上调用的函数 =MyFunc(A1:E4, 5, 4)：

      Function MyFunc (MyData As Variant, Rows As Long, Cols As Long) As Double 
	For I = 1 to Rows 
		For J = 1 to Cols
			MsgBox MyData(I, J) 'or otherwise work with the cell range as an array
		Next J 
	Next I
End Function