Some example models that are included in the Simulink library, there are some variables that their value is not visible. For instance, in the model power_PVarray_grid_det the sample time of the powergui is defined as Ts_Power. I can not figure out the value of this variable. Is there a way to find these hidden variables, have access to them and change their value?
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Click the
File/Model Properties/Model Propertiesitem in the model window menuSelect the
Callbackstab in the model properties dialog window
Then you can see that the PreLoadFcn callback is defined as follows: 
This code is executed before the model is loaded, so Ts_Power is initialized to 10^-6.
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\$\begingroup\$ thank you. Do you know if there is a way to edit these variables through command line or a script? \$\endgroup\$ Commented Jan 16, 2019 at 8:32
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2\$\begingroup\$ I was about to post this. Save the example locally and remove those variables out of the callback. \$\endgroup\$– user16222Commented Jan 16, 2019 at 8:36
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\$\begingroup\$ You can also call your own script from the callback \$\endgroup\$– AVKCommented Jan 16, 2019 at 8:57