Healing with mouseover macros?

[EaMett]

The only viable mouseover macro is:

/micon Cure
/ac Cure <mo>

Anything after that is a random draw and may or may not work. The more you mash your buttons the worst it gets.
To target yourself you need to configure it as mentioned by someone above.

If you want to understand why stuff breaks down when you add more consecutive targets here's the explanation:
If you press the skill while still on your GCD it will still execute.

So imagine the following timeline:

GCD starts
Time goes by
you use your mo heal and it starts executing
/ac Cure <mo>            < does not execute because we're on the GCD
/ac Cure <t>              < does not execute because we're on the GCD
GCD ends
/ac Cure <tt>             < works but not at all what you were going for, potentially not even a heal-able target and you end up healing yourself

Basically anything other that a one liner is going to be a pain. Stick to the simple /ac Cure <mo>