[Matlab] function using Sim() to call Simulink model error

Matlab basics:
1. The knowledge involved here is the workspace. The function uses the Caller workspace. The Base Workspace used with Command Windows is not a workspace. It is opened before the function enters execution, and is released when the function call ends.
2. In addition to declaring global variables (many users recommend not to declare global variables), you can also use the assignin function, the specific method: assignin (ws, 'var', val) ,

"This MATLAB function assigns the value val to the variable var in the workspace ws. The var input must be just an array name and cannot contain an array index. If var is not present in the specified workspace, assignin will be created. ws can contain 'base' Or the value of 'caller' to represent the workspace of the MATLAB base workspace or caller function." (Official Document)

3. The post said that sim can also use the local workspace, such as

function the_best_function()
...
options = simset('SrcWorkspace', 'current');
sim(modelname, [], options)
...
end

A newer version can be used directly

sim(modelname, ‘SrcWorkspace’, ‘current’)

But note that this method cannot be used with the PCT (Parallel Computing Toolbox).
…

At present, my problem has not been solved. I will do this first.

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