Change .ejs extension to .html using Parse.com Express.js

this way works too:

app.set('view engine', 'html');
app.engine('html',require('ejs').renderFile);

someone knows any problem using this way?

app.set('view engine', 'html');
app.engine('html', ejs.renderFile);

So I did app.set to html and app.engine to html and it was working for me.