how to randomly select a neighbor patch that has a higher elevation in netlogo

Question

how to randomly select among all the neighbour patches that are higher instead of the highest neighbour patch? I was thinking to remove (if elevation >= [elevation] of max-

Answer 1

; The butterfly move procedure in turtle context
to move ; a turtle procedure
  if elevation >= [elevation] of max-one-of neighbors [elevation] [stop]
  ; Decide whether to move uphill deterministically with probability q
  ifelse random-float 1 < q
   [ uphill elevation ] ; move uphill
   [ move-to one-of neighbors ] ; otherwise move randomly
   set patches-visited patches-visited + 1
end