ABR 11 Server & Workstation - Using Variables in Mail Notification?

Hello together,

i'm using ABR 11 Server and Workstation.

Is there an Variable like %COMPUTERNAME% in ABR 11 which i can use in the Mail Notification?

e.g.: %COMPUTERNAME% [ABR11]: %Betreff% (this don't works)

I already tried:
%COMPUTERNAME%
%MachineName%
%Machine Name%
%Machinename%

Nothing works!

Is there a list of available Variables on any WEB Side of Acronis?

Thanks for you help