Definition is wrong. This has 4 parameters (Not sure when they were added. v350 has 2, v678 has 4).
v350: Ped ped, bool unused
v678: Ped ped, bool unused, bool flag1, bool flag2
flag1 = super jump, flag2 = do nothing if flag1 is false and doubles super jump height if flag1 is true.
NativeDB Added Parameter 3: Any p2
NativeDB Added Parameter 4: Any p3