I am trying to make a simple program that allows the user to select several check boxes and then starts a command line program using the selected arguments. My plan was to concatenate a string according to the secletions and then pass it to the shell command. How ever whenever i try something like

Shell LoadLine$
(LoadLine$ is my concatenated string i.e. 5200 -g-d )

I get an error. Can anyone explain what I am doing wrong?