In first, Thanks for your work

I have LVLD-B767 and FSX SP2 WIN7 X64 and French Keyboard.
For the responses ATC and LVLD Ground Call, I have programmed the keystrokes : &, é, ", ', (, -, è, _, ç, à (Keys 1, 2, 3, 4, 5, 7, 8, 9, 0) on the USB notepad keyboard.
I have observed that the keys & and ( do not work. In the XML file :
<Sequence>&</Sequence> and <Sequence>(</Sequence>
it is curious that these two characters are not recognized with a standard keyboard

Thanks for the answer.
Marc.