Reply To: how I can write matlab code to use it in matlab component ?

[ali nooreParticipant]

try this code
OutputPort1.Sampled.Signal=InputPort1.Sampled.Signal;

[OutputPort1 = InputPort1;] delete this not need

[y=OutputPort1.Sampled.Signal;] what the value of y ,you must define this in optisystem or define here in matlab as y=10

OutputPort1.Sampled.Signal=InputPort1.Sampled.Signal+1;
what the meaning of code stage no. 3 and 4