Number 6 no work AZERTY

Hello again
as I know a little about JAVA programming, I gave up because there was too much to learn
so I took the opportunity to look at the XML instrument files and XML chords files, I noticed that there are only 6 strings instead of 7 strings
in electric guitar
do not forget in programming the zero (0) starts at 1
and according to the forum, you have to modify shortcuts.xml,
except I don't have it in username.
So I thought it might be a programming error.
the strings in instruments.xml electric guitar are 40 45 50 55 59 and 64 so that makes 6 strings
and it should have a 7 string
what is his number????
maybe I'm wrong
Thank you for your help