Unable to simulate, error in set_param(bdroot, 'SimulationCommand', 'update'), but only first time...

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Marcus 2025-7-22

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https://ww2.mathworks.cn/matlabcentral/answers/2178647-unable-to-simulate-error-in-set_param-bdroot-simulationcommand-update-but-only-first-time

评论： Torsten 2025-7-22

Hi,

I have the issue that when I hit run in a Model for the first time the simulation aborts before starting to run with the error

'myModel'.

Error in myFunctionCalled.m (line 105)

set_param(bdroot, 'SimulationCommand', 'update')

No further information on that error to dig deeper is given.

Now, if I just hit run again without changing anything, the simulation runs just fine...

Any hints on why this behaviour occurs or what options do I have to get more details on the issue?

Thanks for your support.

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Marcus 2025-7-22

additional hint: The set_param is called in a matlab script that is called from a Matlab function within the model and is executed first time on simulation start and afterwards can be called in case of user interaction with a matlab app as control center.

That worked fine until now.