Hi Kar Moh,
If my understanding is not wrong, you are trying to observe the output from the Discrete Event System (DES) block. I also think that testEntry is the function which is causing the error. I see that out1, out2, out3 are not declared as the output.
Usually, any output from the DES block is declared before it is used in any event as shown below:
function [o1,o2,o3] = getOutputNamesImpl(~)
o1 ='out1' ;
o2 ='out2' ;
o3 ='out3' ;
end
You can have look at this link below, where there are two inputs to the DES block similar to your case but with 3 outputs:https://www.mathworks.com/help/simevents/examples/selection-server-select-specific-entities-from-server.html.
You can also try executing the following command alternatively for opening the example in MATLAB:
>>seExampleSelectionServer
This example shows how you can use the MATLAB DES block to write a custom N-Server from which specific entities can be selected using a key lookup. Passengers enter from the IN port of the block and are stored in the block until a message arrives at the KEY port carrying a lookup key (KEY and IN are the inputs which you can have look at and change it accordingly for outputs)
Feel free to look at the link below if you have any questions with syntax of any DES block. The link also has a good number of examples:
https://www.mathworks.com/help/simevents/implement-blocks-with-system-objects.html?s_tid=CRUX_lftnav
Hope this helps to resolve the issue.
