Facebook SDK when selling paid apps rather than in-app payments

Hello. I am selling paid apps, not in-app payments.

So I want to send a purchase event to Facebook at the same time as installation. So the way I thought of it was to send a purchase event at the same time as FB.Init(); but it doesn't work like I thought.

Looking for any insight on this situation. Thanks in advance!


using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Facebook.Unity;

public class FACEBOOKSDKCustom: MonoBehaviour
{
// Awake function from Unity's MonoBehavior
void Awake()
{
if (!FB.IsInitialized) {
// Initialize the Facebook SDK
FB.Init();
} else {
// Already initialized, signal an app activation App Event
FB.ActivateApp();
}
}
}

 

You might have to ask Facebook developer support.