Now it works, I can change the attribute to a static value. Unfortunately now I wasn't all clear in my first topic. My question is if there is any solution for the characters to be changed, just characters, not the nummbers (value). In our senario we have many differents clients and they are accessing our Freeradius server with different NAS-Port-Id. We want the values to be dynamic and the characters to be static. Exampel: We have 3 clients that accessing our Freeradius: Client1: Before Freeradius server NAS-Port-Id = 1/1/4:1001.129 and after Freeradius server NAS-Port-Id = 1_1_4-1001.129. Client2: Before Freeradius server NAS-Port-Id = 1/1/5:1001.130 and after Freeradius server NAS-Port-Id = 1_1_5-1001.130. Client3: Before Freeradius server NAS-Port-Id = 1/1/6:1001.131 and after Freeradius server NAS-Port-Id = 1_1_6-1001.131. I want the value of the NAS-Port-ID to be dynamic and the characters to remain static. Is there any solution for our problem? -- View this message in context: http://freeradius.1045715.n5.nabble.com/Translate-characters-tp5685645p56911... Sent from the FreeRadius - User mailing list archive at Nabble.com.