Please check the answer I gave to the last post.
I guess your question caused confusion because the question was answered to a previous similar post of yours in SketchUp Community. Maybe you need to check back sometimes for additional answers. There may be a notification setting in your profile that'll help. Personally when there is a reply in a post I have made, there is a circle with a number by my avatar in the upper right corner at SketchUp Community, and you can click on that and find the reference to the post.
As you know, if the answer did not properly address your issue, the next step is to refine the question by responding with another post, such as, "that didn't give the shape I want, because..." or "I got this far and it failed.." etc.
In the video you show of the cup model, the author has drawn a circle for the path. Your file did not have a circle in it.