I try to make a Gutenberg plugin but I have problem to set a value of attributes. 
I npm this template
``` npx @wordpress/create-block example-plugin --template @ryanwelcher/multiple-blocks-template ```
because I want create a multiblock plugin. 
the problem is where and how register attributes. 

I register it on block.json:

```
 "attributes": {
		"content": {
			"type": "string",
			"selector": "h2"
		}
	},
```

Then I used it on edit.js
```
 export default function Edit({attributes: {content}, setAttribute}) {
      const blockProps = useBlockProps();

	 return (
      
		 <p {...useBlockProps()}>
             <input value={content} />
               <TextControl label="Question:" value={content}
                allowedFormats={["core/italic"]}
                onChange={x => setAttributes({content: x})} >
			 {__('larum ipsume', 'page-builder')}
		 </p>
	 );
 }
```

this method work but I have an error.
I cannot write all sentence but just first letter and it refresh my input.