public function hiddenFormFields() {
        ob_start();
        ?>
        <template v-for="(obj, key) in customFields">
            <template v-if="obj.means == 4">
                <template v-for="(nestedobj, nestedkey) in obj.value">
                    <input
                        :key="'nested_' + nestedkey"
                        :name="aap_ident + '[' + key + '][' + nestedkey + ']'"
                        type="hidden"
                        :value="nestedobj"
                    />
                </template>
            </template>
            <input
                v-else
                type="hidden"
                :name="aap_ident + '[' + key + ']'"
                :value="obj.value"
                :key="key"
            />
        </template>
        <?php
        $html = ob_get_contents();
        ob_end_clean();

        return $html;
    }