How to add Fullname of the User in the default signature

Hello,

im trying to create a new default signature for the work E-Mail Container.

In the signature the full name of the user should be displayed, if i use the variable %_USERNAME_% it only gets me the Exchangename (like 012345).

I dont know how the CUSTPROP variables work, as i dont know what value i should enter.

Any help here?

Thanks!



Updated the tags
[edited by: Gladys at 6:13 AM (GMT -7) on 30 Oct 2023]