can't assign to array -vba

Question

I'm trying implement the next code and get the error -

cant assign to array

Where is the error ? Note that if i type Dim arrf() As Variant instead of Dim arrf(5) As Variant I get error -

type mismatch

Public Function calc(ByVal value As Integer, ByVal num As Integer) As Variant()

Dim arr(5) As Variant
Dim x As Double

If value >= num Then
    x = value - Application.RoundDown(value / num, 0) * num
    arr(0) = x
    arr(1) = num - arr(0)
    arr(2) = Application.RoundUp(value / num, 0)
    arr(3) = 1
    arr(4) = Application.RoundDown(value / num, 0)
    arr(5) = 1
Else
    x = num - Application.RoundDown(num / value, 0) * value
    arr(0) = x
    arr(1) = value - arr(0)
    arr(2) = Application.RoundUp(num / value, 0)
    arr(3) = 1
    arr(4) = Application.RoundDown(num / value, 0)
    arr(5) = 1
    calc = arr
End If

End Function


Sub cellsfunc()

With Application
    .DisplayAlerts = False
    .EnableEvents = False
    .ScreenUpdating = False
End With

Dim lastrow As Integer
Dim counter As Integer

Dim arrf(5) As Variant

lastrow = Cells(Rows.Count, 2).End(xlUp).Row
For counter = 2 To lastrow Step 2
    arrf = calc(Cells(4, counter), Cells(4, counter + 1))
Next counter

With Application
    .DisplayAlerts = True
    .EnableEvents = True
    .ScreenUpdating = True
End With

End Sub

thanks ahead to all helpers

Solution

You have arrf declared as a fixed size array:

Dim arrf(5) As Variant

An array returning function can't return a fixed size array - only a dynamic one. You just need to declare it as a dynamic array:

Dim arrf() As Variant