(function ($) {
        var NICE_PLUGIN = 'SayHello';

        if (!$.nice.createPlugin) {
            throw new Error('jQuery.nice.' + NICE_PLUGIN + ' require jQuery.nice core.');
        }

        var plugin = $.nice.createPlugin(NICE_PLUGIN, '0.1.0');
        plugin.options = { // default options

            textHello: 'Hello!'

        };

        $.fn.sayHello = function () {
            return $.nice.init(this, plugin, SayHello, arguments);
        };

        var SayHello = function (element, options) {
            element.text(options.textHello); // replace text for textHello from options
        };
})(jQuery);

// replace text on all .test-selector to "Hallo!"
$('.test-selector').sayHello();

// replace text on all .test-selector to "My Hallo!"
$('.test-selector').sayHello({
	textHello: "My Hallo!" // overwrite default options
});

// change default options
// "SayHello" is your nice plugin name
$.nice.getPlugin('SayHello').options.textHello = 'Hallo :)';

(function ($) {
        //...
        var plugin = $.nice.createPlugin(NICE_PLUGIN, '0.1.0');
        plugin.options = { // default options

            textHello: 'Hello!',
            
            beforeChange: null,
            
            afterChange: null

        };

        $.fn.sayHello = function () {
            return $.nice.init(this, plugin, SayHello, arguments);
        };

        var SayHello = function (element, options) {
            $.nice.call(options.beforeChange); //call before callback
            
            element.text(options.textHello);
            
            $.nice.call(options.afterChange); //call after callback
        };
})(jQuery);

// replace text on all .test-selector to "My Hallo!"
// and apply callbacks
$('.test-selector').sayHello({
	textHello: "My Hallo!",
	beforeChange: function(){
	    alert('before');
	},
	afterChange: function(){
	    alert('after');
	}
});

(function ($) {
        //...

        var SayHello = function (element, options) {
            var old_text = element.text();
        
            $.nice.call(options.beforeChange); //call before callback
            
            element.text(options.textHello);
            $.nice.call(options.change); //call change callback
            
            $.nice.call(options.afterChange); //call after callback
            
            this.changeTo = function(value){
                element.text(value);
                $.nice.call(options.change); //call change callback
            };
            this.revert = function(){
                element.text(old_text);
                $.nice.call(options.change); //call change callback
            };
        };
})(jQuery);

// replace text on all .test-selector to "My Hallo!"
// and apply callbacks
$('.test-selector').sayHello({
	textHello: "My Hallo!",
	change: function(){
	    alert('change');
	}
});

// for revert use
$('.test-selector').sayHello('revert')

// for apply your value
$('.test-selector').sayHello('changeTo', 'Hehe!');