You do have them in a group right? A lot of this will not work unless your toons are all grouped first. Make sure that you’re Master and Slaves are all in the same group then try these macros again. Also to use 'focus' based macro's you will first need to set your Master as focus on each of your Slaves.

Jamba requires some configuration in order to work properly, have you configured your group in Jamba yet?

Just a few suggestions, if all this is done then there’s no reason why a focus or assist based macro should not work for you.

- Aldercy

Edit: Sorry Ivan, didn't catch the bottom of your post, looks like you had the same idea.