missing scheduled_message_id

[vincentkerdraon]

Hello,
based on https://api.slack.com/messaging/scheduling, I should receive a scheduled_message_id when using
POST https://slack.com/api/chat.scheduleMessage this is in the API:
ScheduleMessage(channelID, postAt string, options ...MsgOption) (string, string, error)

I would like to use this to delete my message using the API
DeleteScheduledMessage(params *DeleteScheduledMessageParameters) (bool, error)

A workaround is to list the ScheduleMessage, but it would be nicer to get it in the return of ScheduleMessage().

My piece of code

channelID := "xxx"
token:="xxx"

api := slack.New(token)
now := time.Now().UnixNano() / 1000000000
timestampPlanned := now + 10 //in 10 seconds
fmt.Printf("Planning message at %d ; now=%d\n", timestampPlanned, now)
channelID, timestampMess, err := api.ScheduleMessage(channelID, fmt.Sprintf("%d", timestampPlanned), slack.MsgOptionAttachments(slack.Attachment{Pretext: "test in future"}))
if err != nil {
	panic("Could not send message: " + err.Error())
}
fmt.Printf("Message with Schedule sucessfully sent to channel %s at %s\n", channelID, timestampMess)

_, err = api.DeleteScheduledMessage(&slack.DeleteScheduledMessageParameters{Channel: channelID, ScheduledMessageID: "missing scheduled_message_id"})
if err != nil {
	panic("Could not send message: " + err.Error())
}
fmt.Printf("Message with Schedule sucessfully deleted \n")