MDI / Child question

[Jasp182]

Can I call a Function that exists on a child form from a toolbar click in the MDI form? I have a toolbar button called Save and a function on the Child form called SaveAppt. What I have right now is:

Select Case Button.Key
        Case "new"
            Call CreateNewSchedule
        Case "save"
            If gblnWindowExists Then
                frmChild.SaveAppt
            End If
End Select