Addbutton in Select component

[rlinkerstain]

Hello,
I’m wondering if I can add an addbutton to the select component.
Adding it

  <q-select
    ref='qw_select'
    v-model='model'
    :label='label'
    @add='this.add_method'
    clearable
    use-input
    use-chips
    @new-value='this.createValue'
    :options='this.values'
      >
      <template v-slot:append='validation'>
        <q-btn color='grey' icon="add"  @click='what_should_i_do_here'>
        </q-btn>
      </template>
  </q-select>

I want to capture the typed value in the input field when the user clicks the add button, but as soon as it leaves the input field, it seems that the values are dropped.
The input field is behaving like a search field, wich I want by the way, but I want the user to be able to add a new value, when it clicks in the add button.

Any help is appreciated.
Kind Regards,
Ruppert