Sliding window on Simulink

Hello everybody.

I need to implement a sliding window in Simulink to obtain certain ammount of past data in a vectorial form. If we take as example the "Moving average" block in the sliding window mode, what I need is the vector of which the average is calculated.

In case you need more information, what I precisely need to do is the following. I have a (discrete) current of which I want to get the last 5 milliseconds at a certain precise instant of the simulation, when I get a pickup signal of an electrical protection. I need this current in Matlab while the simulation is running. By now, I'm doing so by reading the current (as input signal of an S-function) at each step time since the beginning of the simulation and I'm putting all the information in a vector. This is of course time-consuming. Instead of reading at each step time (the time step is 1e-6 s), I'd prefer to read just in one shot, the whole 5 last milliseconds current data (maybe in a vector or something) when the pickup signal gets activated.

I think there might be an easy way to do so.

Thank you.