title: V-model is not accessible when using :Value on my APP (Vue3)
body: <p>I'm creating a test app and I'm trying to set the default value of the field by calculation of other fields so this is my code:</p>
  <pre><code>&lt;input type=&quot;text&quot; class=&quot;sc table-input&quot; v-model=&quot;staff['all_total']&quot; :value=&quot;(staff.salary + Number(staff['overtime']) + Number(staff['educational']) + Number(staff['finance']) + Number(staff['macul']))&quot; /&gt;
  </code></pre>
  <p>By this, I want to combine four fields (overtime + educational + finance + macul) values and add it to another field called 'all_total' then the 'all_total' also will be used for some other calculations but it's all working the only problem is I don't have access to 'all_total' anymore if I remove the property of ':value' I can't access the 'all_total' v-model if I add ':value' then I can't access. Does anyone know what's wrong with this?</p>