I just tried to enable this:
route-map testpbr permit 5
match ip address 1
set ip next-hop verify-availability 10.30.0.131 1 track 1
set ip next-hop 10.30.0.132
Config allows it, however, when i enable it on the interface, i get a not supported error on the console.
Is this likely to be available in later release of 3750? I currently have 12.2.35SE