iApp Script "Exec" Command Quoting Error

Hi,

I'm running into an issue with calling "exec" from an iApp script. I think it has to do with quoting arguments passed to "exec".

Here is the script error:

Saving active configuration...
Script (/Common/test) generated this Tcl error:
script did not successfully complete: (bash: mkdir -p /home/testuser/backup/: No such file or directory
    while executing
"exec ssh testuser@192.168.1.50 -q 'mkdir -p /home/test/backup/'" line:13)

The command within the iApp script is:

exec ssh testuser@192.168.1.50 -q 'mkdir -p /home/test/backup/'

I've tried putting the arguments in a list first but still got the same errors.

Can someone point me in the right direction?

Thanks!