GTKWave not showing signals of user types

[mlefter]

Hello,

I am writing some VHDL code and try to simulate it with GTKWave. The problem is that I can not see the signals that are defined as user types. All the other signals appear in the simulator.

signal rout_amba, ri_amba : amba_registers; -- not visible
signal rout_cb, ri_cb : cb_registers; -- not visible

signal internal_rst : std_logic := '0'; -- visible
signal output : std_logic_vector(31 downto 0); -- visible

Does anybody has any idea why?

Thanks,
Mihai