How can I run unix commands on a remote server using matlab system

I'm trying to use matlab to ssh into a remote server and then use that to run some unix comands. However, as soon as the remote server is started all the following commands in my shell script to do not get executed. Is there any way to fix this?

Here's what I have in matlab:

system('sh runtycho.sh','-echo');

here's the shell script:

ssh tycho && cd Desktop/Saltmap_Project && davinci

here's what i end up with in the command line:

[edas@tycho ~]$ exit

logout

Connection to tycho.cpex.labs.stonybrook.edu closed.

runtycho.sh: line 1: cd: Desktop/Saltmap_Project: No such file or directory

I had to hit exit to move the code forward.

[Walter Roberson]

https://www.mathworks.com/matlabcentral/fileexchange/35409-ssh-sftp-scp-for-matlab-v2 possibly