Putting 2 commands in sequence won’t work, it is too quick for the BB to respond to. You could try setting the button as a toggle. That way one press intimates the next part, the second press sends the zero value which will end the loop. This will need 2 presses on the same button to go to the next part.
The android version allows actions on press and on release, so 113-127 on press the 113-0 on release which works well. Either borrow someone’s Android phone or wait for the next release of the iPhone app. Not ideal I know but at least you can see it working this way.
'Rep