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

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Nicolas Oriol
Nicolas Oriol 2019-11-29
评论： Nicolas Oriol 2019-12-2
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?

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Stefanie Schwarz
Stefanie Schwarz 2019-11-29
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

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