This posting isn’t too bad, but please How to use code fences for future posts.
Sending a command is independent from changing the state of an Item. When you issue the command it gets picked up by the binding where some work gets done and then when that work is done the Item’s state gets update.
If the command is changing the state of the Item you should also see an “EG_Gang_Switch changed from ON to OFF” in events.log. If you are not seeing this then your Item isn’t changing state as a result of the command.
Look at your Binding’s log and make sure you are not seeing any errors or warnings from it.