MS Excel - working with Arrays and looping through code

I am trying to create an array from two values. For example, lets say cell A1 = 5 and B1 = 7. I want code that examines the two values, identifies the smallest, creates an array that counts from the smallest down to 0, while increasing the largest at the same time:

5   7
4   8
3   9
2   10
1   11
0   12

My code is not working, and I am coming up with some funny values. What am I doing wrong?  Here is my code:

Function createArray(cellA, cellB)

Dim MPos1, getMin, myNewArray(100, 2), rw, prw
Dim myArray(100, 2)

    If cellA <= cellB Then
        MPos1 = 1
        getMin = cellA
    Else
        MPos1 = 2
        getMin = cellB
    End If
   
myNewArray(0, 1) = cellA
myNewArray(0, 2) = cellB

For rw = 1 To getMin

    prw = rw - 1

    If MPos1 = 1 Then myNewArray(rw, 1) = myNewArray(prw, 1) - 1 Else myNewArray(rw, 1) = myNewArray(prw, 1) + 1
    If MPos1 = 1 Then myNewArray(rw, 2) = myNewArray(prw, 1) + 1 Else myNewArray(rw, 1) = myNewArray(prw, 2) - 1
    rw = rw + 1
   
Next

createArray = myNewArray(rw - 1, 2)


End Function