cannot convert value of type '(BackendlessCollection!) -> Void

i try to set everything to optional but doenst work

Hi Jin

Please take a look at the example here

you have write (user:BackendlessCollection!) -> Void
but should (user:BackendlessCollection!) -> ()
as shown in example

same error

Hi Jin,
Unfortunately, fixing bugs in your code is not included into free support. Please try the samples from our documentation and GitHub repository and report if you find any bugs there.

i mean i am using the right fucntion and the right code but i dont understand why is not working. was working on swift 2