I can not to modify the instruments.xml
I am trying to modify the instruments.xml file by using an on line XML Editor (CB online XML viewer and editor). For example I want to add to the violin technics "col legno". So, I copied the code for pizzicato, and paste it a line below by replacing "pizzicato" with "col_legno" and also the program value 45 with 90, because I have an sf2 bank with "col legno" sound in 90. I saved the new xml file and I replaced the old one in the folder "istruments" in MuseScore. But I can't see the change.
Thanks for your time.