Amateur Extra

I passed the exam for my Amateur Extra license today. Took the tests for Elements 2, 3 & 4 in one session, and although they would not tell me what specific questions I got wrong, they did tell me my score was 100% on Elements 2 & 3 and got 48 out of 50 on Element 4. The VE said my license grant should appear in the FCC database by next Thursday. Was wondering if anybody knows if I can change my login username to my call sign when I get it?



Thanks!

Amateur Extra