I am using gconftool-2 to setup exec_ats and it is not taking it?

Specifially I am doing:

gconftool-2 -t list --list-type string --set /desktop/gnome/accessibility/startup/exec_ats "[/home/user/myprogram]"

then when I look at it in the gconf-editor nothing is there...

What is it I am missing... I have many other bool type settings that work fine.

Thanks in advance.

Jerry