How to update programmatically a parameter value in a referenced masked model?

I have a masked model (let's call it sensor_mdl). Parameters were created in the model workspace as Matlab variables, and set as Arguments. The parameters in the mask refer to the corresponding parameters in the model workspace.

I added this model as a referenced model in another model, called sensor_top, which can contain one or more instances of sensor_mdl.

I am trying to update programmatically the values used for sensor_mdl in sensor_top.

I use the commands:

load_system('sensor_top')

objMask = Simulink.Mask.get('sensor_top/Model');

objMaskParameters = objMask.Parameters;

parameter1 = objMaskParameters(1);

parameter1.set('Value', 1);

But I get the error message:

"Unable to modify the mask of block 'MTM_top/Model'. Modify the referenced model's mask definition instead."

Any idea why and how to fix this?

Answer 1

[Stefanie Schwarz]

Hi Nicolas,

editing the Mask object is not the correct workflow. Just use set_param:

set_param('sensor_top/Model','ParamName','1');

See also:https://uk.mathworks.com/help/releases/R2019b/simulink/ug/parameterize-referenced-models.html

HTH,

Stefanie

[Nicolas Oriol]

Thank you for your answer Stefanie. It does work!

Strange that one has to specify the parameter value as a string though.