NativeApplication.nativeApplication.copy,cut,paste exec failed

i using <mx:html id="content" width="100%" height="100%" location="{kindeditorlocalpath}"/> in mx:windowedapplication .

mx:windowedapplication blue part, , mx:html yellow part, , location="{kindeditorlocalpath}" green part.

green part wysiwyg  js editor , calls kindeditor.

when use "copy", "cut", "paste" command in editor,

it calls nativeapplication.nativeapplication's "copy", "cut", "paste" ,

and works well,

and "copy", "cut", "paste" function  return true.

 

but when use "cut" button in air "mx:windowedapplication",

it calls nativeapplication.nativeapplication's "cut" ,

and works failed,

and "cut" function return false.

 

my question how use air button call "copy", "cut", "paste" command deal js editor's content.

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