Trigger selecting unit like a mouse click (with sound etc)

[Volsungh]

Hello,

I am trying to make a trigger that will select a unit for a player, but not the way GUI selects it (simply selecting it by force) but the way a mouse click would do it, which means playing the unit's sound !

I don't need to fake it with something like trigger select + play sound, I need to REALLY select a unit as if the player clicked on it.

I have no idea how to procreed. Any idea ?

Thanks