### Summary ###

set or unset the active update flag of a sub-channel.

### IO ###

```[-ch_name (text) -sub_name (text) -state (1 or 0)]/[text]```

### Description ###

this sets the active update flag on the channel given in -ch_name true or false based on the value given in -state. the active update flag allow the sessions to send PEER_INFO or PEER_STAT frames to the clients when a peer connected to the sub-channel changes information like it's user name, sub-channels, display name, disconnect etc...this flag is ignored if the host have the global active update flag set. if that's the case, all channels will active update. the channel owner-level(1) and admin-level(2) is allowed update this flag.