Custom event configuration in Sencha Touch 2

app.js

// app.js : Use MyDoubleTap defined in MyLib/event/recognizer/MyDoubleTap.js

Ext.application({     
  eventPublisher:{          
    touchGestrure:{               
      recognizers:{
        // call the new-defined class
        doubleTap:{
          xlass:'MyLib.event.recognizer.MyDoubleTap'
        }
        // OR set null to 'doubleTap'
        // doubleTap: null
      }
    }
  }
  // more code beneath...
});

MyDoubleTap.js

// MyLib/event/recognizer/MyDoubleTap.js

Ext.define('Mylib.event.recognizer.MyDoubleTap', {    
  extend:'Ext.event.recognizer.DoubleTap',    
  config:{
    // default value is 300        
    maxDuration:10000;//=> two taps in 10s would be considered as doubletap
  }
});