tilted rectum with superimposed sail

[lorenzo67]

Good day to all. I created a muretto with a superimposed sail, only that when I make the upper part of the tilted wall, it does not show me the sail.
Any suggestions?
Thank you in advance.

 

[Tristan]

How did you create the sail?

 

[lorenzo67]

with a profile and inserted as extrusion on the wall