How to update with an external parameter?

[insulae]

I have a powergrid like:
<livewire:table :area_id="$area_id" >

when i change the value of area_id with an external select i do

public function updatedAreaId(){
$this->emit('pg:eventRefresh-default')
}

the powergrid table is updated but does not apply the change of the variable:

    public ?string $area_id;

    public function datasource(): Builder
    {
        return Personal::query()
            ->where('area_id', $this->area_id)
    }

[insulae]

I've managed to get it to work using session variables:

     public function updatedTarget()
     {
         session()->put('area_id', $this->area_id);
         $this->emit('pg:eventRefresh-default');
     }

and then in powergrid:

     public function refresh():void
     {
         $this->area_id= session()->get('area_id');
     }

with this the dataSource is updated depending on the $area_id

Is this working correct? I don't understand why it didn't work doing it alone

<livewire:rhpd.table :area_id="$area_id" >

this only works at startup and when refreshing area_id nothing happens.