Public Class VariablesForPLC
Implements INotifyPropertyChanged
Private ModeSta1, ModeSta2, ModeSta3, ModeSta4, ModeSta5, ModeSta6 As Boolean
Public Event ThePropertyChanged As PropertyChangedEventHandler Implements INotifyPropertyChanged.PropertyChanged

Protected Sub NotifyPropertyChanged(ByVal value As Boolean)
    RaiseEvent ThePropertyChanged(Me, New PropertyChangedEventArgs(value))
End Sub

Property Sta1Mode() As Boolean
    Get
        Return ModeSta1
    End Get
    Set(ByVal value As Boolean)
        ModeSta1 = value
        RaiseEvent ThePropertyChanged(Me, New PropertyChangedEventArgs("Sta1Mode"))
    End Set
End Property

Private Sub btnModeSta1_Checked(sender As Object, e As RoutedEventArgs) Handles btnModeSta1.Checked
    If btnModeSta1.IsChecked = True Then
        StationModes.Sta1Mode = True
    ElseIf btnModeSta1.IsChecked = False Then
        StationModes.Sta1Mode = False
    End If
    RaiseEvent ThePropertyChanged(Me, New PropertyChangedEventArgs(StationModes.Sta1Mode))
    rectFocus.Focus()

End Sub

<ni:LED x:Name="NiLED1" HorizontalAlignment="Left" Height="23" Margin="191.973,373.934,0,0" VerticalAlignment="Top" Width="23" FalseBrush="#FF3A3A3C" TrueBrush="#FFC8D10A" Style="{DynamicResource LEDStyle1}" IsTabStop="False" Focusable="False" Value="{Binding Sta1Mode, Mode=OneWay}">
                                <ni:LED.FalseContent>Off</ni:LED.FalseContent>
                                <ni:LED.TrueContent>On</ni:LED.TrueContent>
                            </ni:LED>