Holding Data Using Stateflow

Hello,

I have a question about Simulink. I have a high-frequency signal that I need to process in Simulink. I have to do it in Simulink and I cannot use matlab function block or tapped delay block because of some model standards.

I need to hold last 1000 values and use them for error detection. I was told I could use Stateflow for that.

Anybody who knows how?

Thanks in advance