F7-Vue Dynamic Input Validation

I am using F7-Vue and would like to validate inputs by dynamically showing custom error messages below the input.
With F7-core and Jquery-like syntax i can easily target elements and toggle classes to achieve this.
However, am caught up a bit with F7-Vue

https://framework7.io/vue/inputs.html#input-properties
You need to use error-message and error-message-force properties