<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> To complete Ken tips, also observe in the browser, in the message category of the core class you want to extent, the contextual menu offers an option to create such extension category. You will then input *Complex <img moz-do-not-send="false" src="cid:part1.P9bjlsjy.en8fhN7g@free.fr" alt="" width="671" height="403"> <pre class="moz-signature" cols="72">-- <a class="moz-txt-link-freetext" href="http://mamot.fr/@drgeo">http://mamot.fr/@drgeo</a></pre> </body> </html>