# On value change

When prop value changes you can change some other prop's value.

```typescript
interface onValueChange {
    noEmit?: boolean,
    updateDependencyValue?: {
      mode?: 'set' | 'patch'
      key: string,
      onLinked?: boolean;
      condition?: {
        onLinked?: boolean;
        $eval: string
      },
      value: {
        onLinked?: boolean;
        $eval?: string
        const?: any
        default?: true
      }
    }[]
}
```
