File Content: import-page.php <?php if ( ! function_exists( 'curly_core_add_import_sub_page_to_list' ) ) { function curly_core_add_import_sub_page_to_list( $sub_pages ) { $sub_pages[] = 'CurlyCoreImportPage'; return $sub_pages; } add_filter( 'curly_core_filter_add_sub_page', 'curly_core_add_import_sub_page_to_list', 11 ); } if ( class_exists( 'CurlyCoreSubPage' ) ) { class CurlyCoreImportPage extends CurlyCoreSubPage { public function __construct() { parent::__construct(); } public function add_sub_page() { $this->set_base( 'import' ); $this->set_title( esc_html__('Import', 'curly-core')); $this->set_atts( $this->set_atributtes()); } public function set_atributtes(){ $params = array(); $iparams = CurlyCoreDashboard::get_instance()->get_import_params(); if(is_array($iparams) && isset($iparams['submit'])) { $params['submit'] = $iparams['submit']; } return $params; } } } Submit