protection techniques for simulink

How can i make my simulation file i.e .mdl file to expire after certain number of days.I need a detailed explanation with an example.

[Titus Edelhofer]

What do you mean with expire? You can't look at the block diagram anymore, you can't run simulations anymore, the file deletes itself entirely on the harddisk, ...?

Answer 1

[Ryan G]

You can use a protected model reference with a callback inside to check the date and prevent the model from processing when that date has passed.

Unfortunately the protected model reference generates code for the entire system so I'm not sure how you would get the date inside of it.

[Sherman]

Protecting a model results in the loss of callbacks so this may not work.