Help needed in simulink onramp discreet system the third step

I am taking simulink onramp course, in discrete system i facing problem in task 3, after naming signals i getting message as please resolve the issues with the following assessment blocks: Model Assessment

Answer 1

[VM Sreeram]

Model Assessment block, in this case, evaluates whether the renamed signals are correct or not.

You're getting that error because you've named the signals incorrectly.

See this for instance. Here, the error is due to the fact that I made a typo (x_kminus11) instead of x_kminus1.

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