Cannot delete post despite correct permission - facebook

Question

I'm trying to post an image to my feed (via the FB Graph API), do something with it, and then delete said image. Now I am able to successfully post the image but when I try to delete it, I get an error saying
(#10) Application does not have permission for this action
According to the docs, I need the publish_actions permission to delete posts - a post that was made by the app (for the purpose of testing, I'm using a short access token created via the Graph API Explorer), no less. I already have the permission requested and removed and re-requested it but to no avail.
Following is the relevant code:
// Post the image to the private feed
res, err := fb.Post("/me/photos", fb.Params{
"source": fb.File("najm.jpg"),
"access_token": os.Getenv("FB_ACCESSTOKEN"),
})
if err != nil {
log.Fatalln("Error posting image:", err)
}
log.Println("The uploaded image's post_id is:", res["post_id"])
log.Println("Now deleting the aformentioned image from the feed.")
// Delete the image
res2, err2 := fb.Delete(res["post_id"].(string), fb.Params{
"access_token": os.Getenv("FB_ACCESSTOKEN"),
})
log.Fatalln("Error deleting image:", err2)
log.Println("Returned response after deletion:", res2)

Answer 1

I figured out my mistake. To delete the image, I needed to pass the picture id pid instead of the post id post_id.