Fluent Form Entry Delete Bulk

fluent-form-entry-delete-bulk.php

/*
* insert in function.php & remove the code after deleting entries 
*/
add_action( 'plugins_loaded', function(){
	$formId= 8;            // add your form ID
	$startId = 20;         // Entry Delete start from this ID
	$endId = 21;           // Entry Delete end with this ID
	delete_entry($formId,$startId,$endId);
} );
function delete_entry($formId,$start,$end) {
    	
	$delete = wpFluent()->table('fluentform_submissions')
                ->where('form_id', $formId)
                ->where('serial_number', '>=', $start)
                ->where('serial_number', '<=', $end)
                ->delete();
	if($delete){
		$message ='<div class="notice notice-success ">
             <p>Fluent Form Entry Deleted.</p>
         </div>';

	}else{
		
		$message ='<div class="notice notice-error "><p> Fluent Form Entries Deletion  Error! </b></p></div>';
	}
	
	add_action( 'admin_notices', function($message){
		echo $message;
	} );	
}

Not Working.