Define radio options dynamically

I have a form with some radio fields. Before the form is loaded, I would like to fill in my options on the fly. The options are different for every user and session and should not be saved as options in the form itself.

I have found some solutions with filter:

add_filter( 'forminator_field_single_markup', 'wpmudev_add_options', 10, 4 );

But this “works” with HTML, and I would rather replace the options before they rendered. So I have tried with action like this:

add_action( 'forminator_before_form_render', 'wpmudev_prefill_fields_form', 10, 5 );
function wpmudev_prefill_fields_form( $id, $form_type, $post_id, $form_fields, $form_settings ) {
	if( $id == 762 ){
		foreach ($form_fields as &$field) {
			if ($field['element_id'] == 'radio-1') {
				$field['options'] = array(
					array(
						'label' => 'New Object 1',
....

But this does not change the output of the field.

Question: is there any possibility to provide the options for radio fields as array on the fly without messing HTML via str_replace in forminator_field_single_markup? Or is this the only option?

Thank you.