Navigation problem Hole in Landscape

Hi.I wanted to make cave entrace but if i maked hole in my landscape i have a problem going through. I am using Top down default navigation blueprints with some modification…I thing the problem is in the cursor because he is on rest of landscape at that moment and character wants to go to the landscape.
Maybe I will have to do my own mechanism of walking only in that direction without pathfing which I don’t use anyway because my character stops after releasing the walk button.

Your question isn’t very clear. I think you should have a look at this tutorial/example.

Nobody know ?

The video didn’t help me. I think the problem is not in the hole creation but in the navigation itself. This is a problem only in top down camera + movement … In first person it would not be a problem.

nobody know ?