Hello. I am trying to update a custom model, this is loaded when starting  POS. But I want the records to update (maybe reload them?) when I press a button on the screen. 

I tried to do it by calling python method from action button with 'rpc.query' but that has not worked, I don't know if there is any way to do it from javascript.
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models.load_models({
    model:  'citas',
    fields: ['folio', 'name', 'paciente', 'fisio_id', 'date_only', 'status_general'],
    domain: [['status_general', 'in', ['realizado','agendado']], ['date_only','=', today]],
    loaded: function(self, citas){
        self.citas = citas;   
    }
});

UPDATE:

I tried to return the updated ids from 'rpc.query' and filter the object this.pos.citas but when assigning the result to self.pos.citas. does not show any record, I do not understand why, because the object assigned to this.pos.citas has the same structure as the original

    var citas_pos = this.pos.citas;                                                       
    var citas_ = this.pos.citas;

   rpc.query({
        model: 'pos.order',
        method: 'getCitasIdsActualizadas',
        args: [],
    }).then(function (citas_ids){
        for (var i=0; i<citas_pos.length; i++){
           if (citas_pos[i].id in citas_ids_update){
                citas_updated.splice(1,0,citas_pos[i]);  //remove id that is not in the updated list
           }
        }      
    });

    this.pos.citas = citas_updated    
    return this.pos.citas; 

// in python I have this method, it works fine

@api.model
   def getCitasIdsActualizadas(self):
       citas_agendadas_ids = self.env['citas'].search([('status_general', 'in', ['Agendada', 'Realizado', 'realizado', 'agendado'])]).ids
       return citas_agendadas_ids

Please suggest any solution. Thanks