Cannot add friend by Line ID

[nonth]

Hi,

I try to add friend by using Line ID when call method it will open Line app and always show message _"User not found."_

example of code, friend id is "nyan"

[Line addFriend:@"nyan"];

From your example you use _hPtAUZX6w5_ as Line ID, my question is how to get or generate this hash string ?

Thank you for your answer, nonth