not resolving {host:key.func(param)} in graph name

I've created a simple test host with two items:

• system.uptime
• system.uname

I use the documentation:
https://www.zabbix.com/documentation/2.2/manual/appendix/macros/supported_by_location

I would like to use item value - host:key.func(param)} - in the graph name.

So, I've created graph with name: uptime on {{HOST.HOST}:system.uname.last()}

But it seems that item value isn't resolved. In monitoring on the graph name I can see literally:

uptime on {{HOST.HOST}:system.uname.last()}

instead of something like:

uptime on Linux v001.home.net.pl 3.9.11 #2 SMP Thu Sep 19 16:10:20 CEST 2013 x86_64

Am I missing something? Please correct me if I'm wrong here.