Simulink can't see variables in base and model workspace

Hello,

I have simple simulink model with a single constant source, a user-function block and a scope sink.

The function is defined by

function y = fcn(u)
y = A*u;
end

where the variable A=1 is defined in the base workspace and in the model workspace as well.

When clicking on "Explore" in simulink, one can see the variable A in the workspaces.

However, when running the simulink model, I get the following error

Undefined function or variable 'A'.

Function 'MATLAB Function' (#46.24.25), line 2, column 5:

"A"

The current folder is set in the path and I am using Ubuntu 18.04.

No settings changes to the default installation were made and restarting matlab did not solve the issue.

What could be the reason for this behaviour?

Answer 1

[Fangjun Jiang]

You need to add "A" as a parameter for the MATLAB Function block.

Double click to open the "MATLAB Function" block editor, click "Edit Data", menu "Add", "Data", add data "A" and specify the scope as "parameter".