[SR-Users] How to overwrite DisplayName

Hi and first of all thanks for your amazing work. I have a kamailio 5.1.1 and i need to change the DisplayName before sending INVITE to another Asterisk server. I need that &quot;Sergio&quot;&lt;+33558700000(a)80.169.227.18&gt; Becomes &quot;Simona&quot;&lt;+33558700000(a)80.169.227.18&gt; I've tried just changing $fn value: $fn="Simona" Or using uac_replace_from("Simona ",""); But INVITE msg is always From: "Sergio"<sip:+33558700000@80.169.227.18;transport=UDP>;tag=1ac9e066 I've tried this options in different position in kamailio.cfg but i can figure out the problem. Do you have any suggest? Thank you, Stefano.