can't set property's name

why i can't set any property ? i try to update dog's name into 'cat', but i can't make it. but followed your example code.  both set({ name: 'cat' }) and set('name', 'cat'). 
the only reason i have to update properties' name is because i want to change them into chinese. i read many issues about non-english language support, and you said set property new name is the only way. but it doesn't work.
thanks

`
const editor = grapesjs.init({
            container: '#gjs',
            components: '<div class="txt-red">Hello world!</div>',
            style: '.txt-red{color: red}',
        });
        const styleManager = editor.StyleManager;
        var sector = styleManager.addSector('mySector', {
            name: 'My sector',
            open: true,
            properties: [{ name: 'dog' }]
        });
        var property = styleManager.getProperty('mySector', 'dog').set('name', 'cat')
        console.log(property)
`
![1554714193(1)](https://user-images.githubusercontent.com/23737076/55714256-eb07f300-5a24-11e9-8fe1-83d6b8c4b990.jpg)
![1554714230(1)](https://user-images.githubusercontent.com/23737076/55714257-eba08980-5a24-11e9-9760-40502e408e58.jpg)
![1554714250(1)](https://user-images.githubusercontent.com/23737076/55714258-ec392000-5a24-11e9-8644-a632136b0976.jpg)