Why CAN blocks do not update programmatically?!!

Hi, I change the message list(MsgList) of CAN Pack module using set_param:

Sys= 'Test/CAN Pack'
set_param(Sys,'MsgList', 'RcInfoMsg');

But as a result noting changes on the block. When I check the message from command line it is changed but the ports are not updated unless I click on the block and then Ok/ Apply button. This one also does not work:

set_param(gcb,'SimulationCommand', 'update');

I have found noting related. The only thing in this link , Accepted answer is using apply_CAN_block(gcb) which is not existed at all.

Any idea?