Sqlite database tutorial

I have a concern.. If I pass the $scope variables it wont work.. instead the plugin wont work and the variable is empty I also tried unbinding the $scope variable but still wont work.. instead the code like this

$scope.save = function (query) { $cordovaSqlite.execute(db, query) ...  }

.. how can I pass the $scope variable to act as my query instead of putting on the function parameter?