Returning A Multidimensional Array

I'm getting a compile error "Can't Assign to array" when I try to return a multidimensional array from a function. I'm not a VB expert, and I was unable to find any examples of returning a multidimensional array from a function. Here is some sample

Sub someSub
Dim data(1 To 4, 0 To 23) As Integer

For counter = 1 To numSheets
data = processData(counter, data) ' The error happens here
Next
End Sub
Private Function processData(counter As Integer, data() As Integer) As Integer()
Dim dataCopy(1 To 4, 0 To 23) As Integer

dataCopy = data
'modify dataCopy
processData = dataCopy
End Function