expo notification custom sound ios

i want to send custom notification sound, so in android im just using channel id,
but how can i send it in ios?

from what i understood ios not support in channel-id

Thanx, but the ios is not ignore from channel id?

From what I see in the code. Client side support for custom sounds added. It seems that push notification server does not support passing correct value in audio field. I’m looking into how to either implement or request it.