[RESOLVED] calling a function - compile error

[calarexar]

Hi there,
im having a problem with calling a sub procedure ive created. When i call it it says

Compile error :
Type mismatch: array or user-defined type expected

il post the functions and then the call section.

Private Sub selection_sort_lott(ByRef lott_num(), ByRef lott_sort())
Dim outer As Integer
Dim inner As Integer
Dim minimum As Integer
Dim temp As Integer

For outer = 1 To 3
    minimum = outer
    For inner = 1 To 3
        If lott_num(inner) <= lott_num(minimum) Then
            minimum = inner
        End If
    Next inner
    lott_sort(outer) = lott_num(minimum)
    lott_num(minimum) = " "
Next outer
End Sub

Thats the function im trying to call. This is how im calling it. Im calling it in as the form loads.

Private Sub Form_Load()

Call selection_sort_lott(lott_num(), lott_sort())

Thanks for any help!

p.s. if ive made a stupid nooby mistake, its cuz i am one!

p.p.s lott_num is an integer