I want to call a function in a form from a function in a modul

So I defined the function Init\_StockForm() in the form (which is called Form):

```
    Public Sub Init_StockForm()

      MsgBox ("Bla")

    End Sub

```

I call that function in the module as follows:

```
    Form.Init_StockForm

```

but this results in a Runtime error 91

So what's wrong here?
Thanks form help