Ah 
you are not yet aware of the fact that external scripts are cached 
External scripts are cached, you need to restart DT after making modifications.
See here for a suggestion from the resident script master for circumventing this problem 
Ah you are not yet aware of the fact that external scripts are cached External scripts are cached, you need to restart DT after making modifications.
See here for a suggestion from the resident script master for circumventing this problem