Need Trace Code for Flycam with Landscape, and need to set up the Audio Dialogue System

NEED BUMP CODE For the FLYCAM

I got the flycam working. It turns around (but there’s no pitch up and down yet). But what I want to do now is to have a
text message popping up everytime the flycam makes contact with the ground.

Does anyone know how to make the mesh detect the ground when it strikes it?
I need the trace blueprint code for detecting the landscape. and when it makes contact with it, to send a simple
print string message to let me know its hit the ground.