code: function(params, extra) {
  		var output = [params];
  			
  		if(extra != undefined) {
  			output.push(extra);
  		}
  		else {
  			output.push(null);
  		}
  		
  		return {
  			start: function(completeCallback, errorCallback, messageCallback) {
  				completeCallback = completeCallback || function() {};
  				errorCallback = errorCallback || function() {};
  				messageCallback = messageCallback || function() {};
  				
  				exec(function(result) {
  				    if(result === "OK") {
  				        completeCallback(result);
  				    }
  				    else {
  				        var requestCode = result["_ACTION_requestCode_"];
  				        delete result["_ACTION_requestCode_"];
  
  				        var resultCode = result["_ACTION_resultCode_"];
  				        delete result["_ACTION_resultCode_"];
  
  				        messageCallback(result, requestCode, resultCode);
  				    }
  				}, errorCallback, "startApp", "start", output);
  			},
  			check: function(completeCallback, errorCallback) {
  				completeCallback = completeCallback || function() {};
  				errorCallback = errorCallback || function() {};
  				
  				exec(completeCallback, errorCallback, "startApp", "check", output);
  			},
  			receiver: function(completeCallback, errorCallback, messageCallback) {
  				completeCallback = completeCallback || function() {};
  				errorCallback = errorCallback || function() {};
  				messageCallback = messageCallback || function() {};
  
  				exec(function(result) {
  				    if(/\d+/.test(result)) {
  				        completeCallback(result);
  				    }
  				    else {
  				        var action = result["_ACTION_VALUE_FORMAT_"];
  				        delete result["_ACTION_VALUE_FORMAT_"];
  
  				        messageCallback(action, result);
  				    }
  				}, errorCallback, "startApp", "receiver", output);
  			}
  		}
  	}
docs: Set application params
  
  @param {Mixed} params				params, view documentation https://github.com/lampaa/com.lampa.startapp
  @param {Mixed} extra   				Extra fields
  @param {Function} errorCallback		The callback that is called when an error occurred when the program starts.