get a field value in an action

How can i get the value of a form field inside an action?

This is my action:

Actions\Action::make('gespreksverslag_herschrijven')
->label('Gespreksverslag herschrijven')
->icon('heroicon-o-pencil')
->action(function(Get $get){

$originalText = $get('conversation_report_original');

$service = new RewriteTextWithGPTService();
$rewrittenText = $service->handle(static::$prompt, $originalText);

$this->form->fill(['conversation_report_gpt' => $rewrittenText]);
}),


$get() will give m the following error: Typed property Filament\Forms\Components\Component::$container must not be accessed before initialization

It must be simple, but I can't find it in the docs. What am i missing?
Solution
Found it. I can use $this->data to retrieve the form values

Actions\Action::make('gespreksverslag_herschrijven')
->label('Gespreksverslag herschrijven')
->icon('heroicon-o-pencil')
->action(function(){
$originalText = $this->data['conversation_report_original'];
$service = new RewriteTextWithGPTService();
$rewrittenText = $service->handle(static::$prompt, $originalText);

$this->form->fill(['conversation_report_gpt' => $rewrittenText]);
}),
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