iOS Question Problem getting height of NavigationBar ?

  Dim NativeMe2 As NativeObject = Main.NavControl
  ' self.navigationController.navigationBar.frame.size.height;
  Dim NativeMe3 As NativeObject = NativeMe2.GetField("navigationBar").GetField("frame").GetField("size").GetField("height")
  Dim h As Object = NativeMe3.AsNumber

Application_Start
Application_Active
Error occurred on line: 110 (modshare)
[<NSConcreteValue 0x17d5b350> valueForUndefinedKey:]: this class is not key value coding-compliant for the key size.
Stack Trace: (
CoreFoundation <redacted> + 150
libobjc.A.dylib objc_exception_throw + 38
CoreFoundation <redacted> + 0
Foundation <redacted> + 262
Foundation <redacted> + 202
Share Test -[B4INativeObject GetField:] + 124
Share Test -[b4i_modshare _sharetosocialmedia:::::] + 1594
Share Test -[b4i_main _cmdsharelocalimage_click] + 1328
CoreFoundation <redacted> + 68
CoreFoundation <redacted> + 300
Share Test +[B4I runDynamicMethod:method:throwErrorIfMissing:args:] + 1928
Share Test -[B4IShell runMethod:] + 496
Share Test -[B4IShell raiseEventImpl:method:args::] + 1846
Share Test -[B4IShellBI raiseEvent:eventarams:] + 1316
Share Test __33-[B4I raiseUIEvent:eventarams:]_block_invoke + 74
libdispatch.dylib <redacted> + 10
libdispatch.dylib <redacted> + 22
libdispatch.dylib <redacted> + 1322
CoreFoundation <redacted> + 8
CoreFoundation <redacted> + 1512
CoreFoundation CFRunLoopRunSpecific + 476
CoreFoundation CFRunLoopRunInMode + 106
GraphicsServices GSEventRunModal + 136
UIKit UIApplicationMain + 1440
Share Test main + 108
libdyld.dylib <redacted> + 2
)

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