Making Flying units with navmesh agents

hi all, Like Title says i am trying to make flying units like drones, plains, which could fly over all objects mine terrain have. I tried baking a different navmesh on a plain which is above mine terrain. but mine drone unit doesn't detect it. its keep saying "SetDestination" can only be called on an active agent that has been placed on a NavMesh". Any idea how to fix it..?. (Note i have baked navmesh on a terrain and a plain made different layer call flying for flying units set those in agents but still its not getting placed above navmesh) idk wat m doing wrong since i havn't tried this kind of stuff before any help would be appreciated. Thnx in Advance.

Attached Inspector Screenshorts : -

for some reason m not able to see screenshorts m posting so here are links for them

this is unit m trying to make it fly
https://ibb.co/nAXSw5

this plain (which m using as flying navmesh)
https://ibb.co/kMyNUQ

this is Navigation layer setup
https://ibb.co/cRWnw5

 

or any other way to make flying units..? What you guyz do accomplish it..?

 

nvm i made it problem fixed

 

Hi, how did you fix it?

 

For unity Nav mesh you can parent your units to an invisible nav mesh agent and the adjust the height as needed. It's not without its problems, but that's probably the simplest solution with unity Nav mesh...

 

yea thats what i did got that solution by accident i was trying random ideas hahahahahha