That won't work. Nikita wants to be able to DPS and Interact with one button. Interact with target cannot be triggered from a macro, and as such can't be placed on an action bar. What they need is a means to be able to send different keys from the same key, since interact with target can only be called from a key, just like movement {forward, back, turn, strafe, jump}. They need to be able to send the key for interact with target on one press and call a macro on a subsequent press.