Event register problem

Question

hi,
i am new in adobe bridge.
when i select a thumbnail or file in content that time i want to $.writeln("someting");
for this i register e event but that is not working please help me in this regards. i'm working on adobe bridge cs5
i'm writing this code in  SnpListenDocEvents.jsx file.
onThumbnailEvent = function( event ){
          if( event.object .constructor.name == "Thumbnail" ){  // also use if( event.object instanceof Thumbnail ){
                    if( event.type == "select" ) {
                              $.writeln("your code is here");
                              return {handled:true};//stop processing event handlers
// register the handler
allDocEventHandlers = { handler: onThumbnailEvent };
app.eventHandlers.push( allDocEventHandlers );

Answer 1

#target bridge
thumbSelected = function( event ) {
    if  ( event.object instanceof Document && event.type == 'selectionsChanged' ) {
        $.writeln( 'Fluff…' );
    } return { handled:false };
app.eventHandlers.push( {handler: thumbSelected} );