cast a custom ability with triggers and other questions about abilities

Hello everybody!!!

I've created a custom unit with some custom abilities, and I've found some problems.

1. How can I order to the unit cast an custom ability with triggers???

Iv'e tried with
but the ability that I've created does not appear in the list.

And the second question is:

2. Is it possible create just one mirror image (like blademaster) of a custom unit using triggers??

Thanks for your help.

Merely order the same as you would for the base ability, as it uses the same ability order string.

What do you mean by the second question? You could use a dummy unit to use a wand of illusion on the unit.