CloudDeploy[FormFunction[ ]] not working

Question

What is wrong with this code:

CloudDeploy[FormFunction[{"Number1"->"Number","Number2"->"Number"},
                         If[#Number1/#Number2<=0.5,"True","False"]]]

It gives back the following error:

Function::slot1: (CloudObjectPrivatesetCloudIcon[Last[#1],CloudObjectPrivatecloud$15017,CloudObject`Private`uuid$15017,First[#1],\[Ellipsis] t-><<37>>,Deployment->CloudObjectPrivatedeployment$15017,Asynchronous->True,Content->FormFunction[Number1 Number2 ,If[Slot[<<1>>] Power[<<2>>]<=0.5,True,False]],Deployment->WebForm]&)[<<1>>] is expected to have an Association as the first argument.

Answer 1

use postfix & pure function or fullform pure Function.

CloudDeploy[
  FormFunction[
    {"Number1" -> "Number", "Number2" -> "Number"}, 
    If[#Number1/#Number2 <= 0.5, "True", "False"] &
  ]
]

CloudDeploy[
  FormFunction[
    {"Number1" -> "Number", "Number2" -> "Number"}, 
    Function[If[#Number1/#Number2 <= 0.5, "True", "False"]]
  ]
]