Reverse an array

arr = array(5,4,3,2,1)
istart = lbound(arr)
iEnd = ubound(arr)

for i=istart to iEnd/2
    temp = arr(i)
    arr(i) = arr(iEnd - i) 
    arr(iEnd - i) = temp
Next

for i=istart to iEnd
      MsgBox arr(i)
Next