How to create/access and update global variables in Simulink using Data Store Memory block

In the Simulink Model (.slx attached), I would like to create a global variable 'Pulse' which I have attemped doing in the MATLAB function block. I further would like to update this variable such that at each iteration of the simulation, the updated variable is used by the MATLAB function block. I have added the Data Store Memory block to the model, however the model returns the following erroe for the above mentioned steps take:

Simulink cannot determine sizes and/or types of the outputs for block 'globalSimulinkData/MATLAB Function' due to errors in the block body, or limitations of the underlying analysis. The errors might be inaccurate. Fix the indicated errors, or explicitly specify sizes and/or types for all block outputs.

The variable 'Pulse' is initialised in the MATLAB script as 'PulseInit' (.m file attached).

Answer 1

[Fangjun Jiang]

Follow the example here.

https://www.mathworks.com/help/releases/R2020b/simulink/ug/using-global-data-with-the-matlab-function-block.html

[Krupa Prag]

Thank you.