Trombone glissando

Hello Team of Musescore! I love the program and have been very
happy
with how it can be used to my abilities and wishes. I do have one problem
with the instrument the trombone. There is no way to give it a mute sound and
the glissandos sound like an average chromatic scale instead of the iconic
sound of it bending pitch with the slide and not tonging. One of the biggest
features of a trombone, I feel it should be added to musescore as I'm sure
many would agree with me. Overall though I love the program. Thank you for
offering me this wonderful chance to create some of my ideas into reality.