Y-Wing ION Cannon Issues

[Subbydawg]

Why can I not get my Y-Wings to fire their ION cannons during the Kessel rescue? I press the special ability button on the bottom of the screen but they do not fire the ION. What can I do so that they disable the shuttles instead of killing them?

[xhh2a]

after you press it, you have to select a target.

[Subbydawg]

after you press it, you have to select a target.

I've know that and have done it. I get the funky looking target recticle and I right click on a shuttle but nothing happens.

[Thor the Bassis]

I think mine does that in a mod. I don't know why but help would be good