Android Question Dark Theme And Light - Navigation & Status Bar Icon Or Text Color

[Samara]

I have button and i want when user clikc this button can switch between:
1.Black Navigation & Status Bar Background With Light Icon Or Text Color.
2.Light Navigation & Status Bar Background With Black Icon Or Text Color.

I found this Code:

Dim jo As JavaObject
jo.InitializeContext
jo.RunMethodJO("getWindow", Null).RunMethodJO("getDecorView",Null). _
RunMethod("setSystemUiVisibility", Array(0x00002000)) 'ICONS DARK STATUS BAR

Dim jo As JavaObject
jo.InitializeContext
jo.RunMethodJO("getWindow", Null).RunMethodJO("getDecorView",Null). _
RunMethod("setSystemUiVisibility", Array(0x08000000)) 'ICONS LIGHT NAVIGATION BAR

but i don't now how use! help here!:

Private Sub Btn_swicth_Click
    If Theme_Mood = "Dark" Then
    
    Else
    
    End If
End Sub