I've vbulletin 4.2.0 i added an special button to it's editor with this article;

http://www.vbulletinguru.com/2012/add-a-new-toolbar-button-to-ckeditor-tutorial/

The thing i want to do is add an syntax highlighter code with this button.

When i use below code it's working fine;

CKEDITOR.plugins.add( 'YourPluginName',
{
    init: function( editor )
    {
        editor.addCommand( 'SayHello',
            {
                exec : function( editor )
                {    
                        editor.insertHtml( "Hello from my plugin" );
                }
            });
        editor.ui.addButton( 'YourPluginName',
        {
            label: 'My Button Tooltip',
            command: 'SayHello',
            icon: this.path + 'YourPluginImage.png'
        } );
    }
} );  

so i changed this code to this, because i wannt to add specific text like below;

CKEDITOR.plugins.add( 'DKODU',
{
    init: function( editor )
    {
        editor.addCommand( 'SayHello',
            {
                exec : function( editor )
                {
                        editor.insertHtml( '[kod=delphi][/kod]' );
                }
            });
        editor.ui.addButton( 'DKODU',
        {
            label: 'My Button Tooltip',
            command: 'SayHello',
            icon: this.path + 'star.png'
        } );
    }
} );

after update the code when i press the button nothings happen, i checked with google and this site but i couldn't figure it out i think i made mistake with some special characters but i couldn't find what's the problem.

If i made some mistakes when i publish this question forgive me and also forgive me for my bad english, thanks.