External bat. script type

I have a simple external script with .bat extension. I was trying to get it to run from drag script using the script action.
The script is very simple:
MGBox.exe -P COM22 -T 1500

However, it doesn’t get launched. Is there a different way I need to get this to work under drag script ?
Thank you

In fact I got it to work. I had a connection problem with the unit but once resolved, it worked.