how can I update a constant block within a Simulink simulation?

I have created a Simulink model that takes variables (constants) from the Workspace. Within the Simulink model I have added a Matlab function that recalculates these constants after each iteration. However, after each iteration, instead of considering the newest value calculated for each variable, the model takes again the value I set from the Workspace in the beginning. Any idea on how I can update my values each step?

Thanks, Omar

Answer 1

[Slava Shougaev]

You can also use the 'IC' block (Initial Conditions).

Answer 2

[Hari Desanur]

The variables you are updating might be local to your MATLAB function.

Consider defining the variables in the MATLAB function as persistent or global . This might resolve the issue where the changes being made to the variables are not reset.