$this->form->fill([
'lineItems' => [
['account_ref_id' => '1', 'total' => '100.00'],
['account_ref_id' => '2', 'total' => '200.00'],
],
]);
$this->form->fill([
'lineItems' => [
['account_ref_id' => '1', 'total' => '100.00'],
['account_ref_id' => '2', 'total' => '200.00'],
],
]);