Hi,

If you need to change the name dynamically, you can set your dynamic value in the usestate of the js file., and you can call this usestate value in XML

example:

 first you need to import the usestate from odoo owl

import { useState, Component} from "@odoo/owl";

export class YourJsFile extends Component {

    setup() {

        this.name = useState({ record : [] })
       }
// Add your other js functionalities
 

}

YourJsFile.template = "your_template_name";

In your XML file you can call the usestate value to get dynamic name

t-att-value="hours"
t-att-name="name.record"
id="hours"/>


Note: The above one is just an example with your provided details, and its give an idea about how to add dynamic value on each change.

Hope it helps