I am building a delay system like this:
Simulation time is from 2005 to 2035 and the time step is fixed to 1.
What I want to do is to have different delay time at different time.
For instance, in the first year, no delay; but in the second year, there is 1 time step delay; in the third year, there are 2 time steps delay.

However, when I ran this model, I got this result:
In scope 2 are the signals, and in Scope are: upper is supposed to be the sum of the two signals after delayed, and the bottom is the sum of the signals.
But I cannot see the delayed signal.

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