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### Previously
In the previous section we instantiated a form passing parameters to it
```javascript
{first_name: fields.string(), last_name: fields.string()}
```
Let's make use of one of the most useful feature of Kanso : CouchTypes
### Files it relies on
```
example-app
|-- lib
|-- types.js
```
Among the files previously mentionned, in order to use CouchTypes we need to edit
the auto generated file `types.js`
### types.js
```javascript
var Type = require('couchtypes/types').Type,
fields = require('couchtypes/fields'),
widgets = require('couchtypes/widgets');
exports.person = new Type('person', {
fields : {
first_name: fields.string(),
last_name: fields.string()
}
});
```
We just created a document type : person. A person document type has two string fields.
For more informations about CouchTypes please refer to [[Getting_started_with_CouchTypes]]
### shows.js and updates.js
```javascript
var person = require('./types').person;
```
First, require the person type so it can be used in the file.
Then replace
```javascript
new Form({first_name: fields.string(), last_name: fields.string()});
```
With
```javascript
new Form(person);
```
Now the form will render according to the type intrinsic widget fields properties
### Next
Now that we know how to create a form that relies on CouchTypes. Let's go a step forward and see how on can customize the widget property : [[Custom_widgets]]
