setVariable Failing to set Parameter

My Harness has a model ref with it's own model refences, and the harness data dictionary referencess the reference data dictionary.

In one of the lower level model references is a datadictionary parameter which I need to set.

In my script.

I getValue to get the parameter from data dictionary, modify it then use simin.setVariable to set it and then sim or parsim the simIn.

I have confirmed that the simIn object has the correct target value but when simulating can see this is not updated from the default data dictionary value.

I am simulating in Normal mode.

I have tried:

Specifying the workspace to be the reference model workspace

Moving the parameter to the top level data dictionary.

Deleting the work folder contents to force rebuild.

Changing the parameter storage class to ExportedGlobal

Under Model Properties ticking Enable access to base workspace and enforce consistant data definitions.

Opening the data dictionary and changing the value with setValue does work but would prevent efficient batch runs.

What else could be preventing the value from setting?

Answer 1

[Josh Kahn]

Hi @Reuben,

This worked for me, is this different than what you are doing?

Josh

dictionaryName = 'TestDictionary.sldd';
Simulink.data.dictionary.create(dictionaryName);
dictionary = Simulink.data.connect(dictionaryName);

paramName = 'TestParam';
create(dictionary, 'Parameter', paramName);
dictionary.TestParam = 12;
dictionary.saveChanges;

modelName = 'TestModel';
testModel = new_system(modelName);
set_param(modelName,'DataDictionary',dictionaryName);

add_block('simulink/Sources/Constant', [modelName '/Constant'], ...
    'Value', paramName, ...
    'SampleTime','-1');
add_block('simulink/Sinks/Out1', [modelName '/Out']);
add_line(modelName, 'Constant/1', 'Out/1');

save_system(modelName);

simOutDefault = sim(modelName);
defaultOutput = simOutDefault.yout{1}.Values.Data(1)

defaultOutput = 12

% Try again with simIn
simIn = Simulink.SimulationInput(modelName);
simIn = simIn.setVariable(paramName, 15);
simOut = sim(simIn);
modifiedOutput = simOut.yout{1}.Values.Data(1)

modifiedOutput = 15