What can I do to get correct data after OK.OpenInviteDialog in Unity OK SDK?

Question

Classmates

1) I call OK.OpenInviteDialog on Android 6.0.
2) In the invite window, I select the user to whom I want to send an invite.
3) I click send.
4) Only {"count":1} comes in the response.
And if I invite another user, then {"count": 0} comes.
How can I make the ids of the selected users come?
The game is made on Unity 5.4.1f1
Odnoklassniki SDK version 1.0.21