need to turn "Block notification to speaker" ON & OFF everytime i change wired & bluetooth

Recently I got my self a Bluetooth hands-free unit (samsung hs3000).
When I'm using Bluetooth unit, the notification won't come out from the phone speaker if I tick the option "Block notification to speaker".

My problem is, I need to tick "Block notification to speaker" so my music won't get interrupted while using wired headset.
And
I need to untick "Block notification to speaker" again when I'm using Bluetooth unit (i need notification to come through phone speaker).

I need to change the setting for "Block notification to speaker" every time I change from wired to Bluetooth & Bluetooth to wired.
Is there any setting combination can do that for me automatically?

*tried many setting combination, but still can't get what I want.

Thanks

I'm working on better block notification settings now.