Need help to complete learn unity course

Hi to anyone,
I'm referring to this link : https://learn.unity.com/tutorial/ch...ca6e8810f&projectId=5caccdfbedbc2a3cef0efe63#. I've completed the Flying plane section but I'm unsure how to make the propeller spin. Has anyone completed this section already?

If the unity learn team sees this, it would be nice if they can give some clues. I'm not sure how to complete this.

 

Issue solved by using 3D object rotation.