B4J Question Function keys

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    sm.Initialize(Form1.RootPane)
    MainForm.Show
    MainForm.Title = "Key Listener"
    
    AddKeyPressedListener
    
End Sub


Sub AddKeyPressedListener
    Dim r As Reflector
    r.Target = MainForm.RootPane
    r.AddEventHandler("keypressed", "javafx.scene.input.KeyEvent.KEY_PRESSED")
End Sub


Sub KeyPressed_Event (e As Event)
    
        Dim jo As JavaObject = e
        Dim keycode As String = jo.RunMethod("getCode", Null)

        Log(keycode)

        If keycode = "ESCAPE" Or keycode = "C" Then
        Else If keycode = "Y" Then

        Else If keycode = "N" Then
            
        End If
    
End Sub

Sub AppStart (Form1 As Form, Args() As String)
    Dim gvh As GameViewHelper
    gvh.AddKeyListener("gvh",Form1)
End Sub

Sub gvh_KeyReleased (KeyCode As String) As Boolean
    Select KeyCode
        Case "F1":Log("f1 pressed")
        Case "F2":Log("f2 pressed")
    End Select
End Sub