Wave 8 - USS Enterprise-E - William T Riker

William T Riker
When using William T Riker, do you still need to pay the target card's cost for the Free Action?
Deanna Troi
Example, would you still need to pay the Discard cost when using Deanna Troi's Action as a Free Action via William T Riker?
Add 1 [crew] Upgrade slot to your Upgrade Bar
After you move, you may disable this card to perform the Action on one of your [crew], [talent], or [tech] Upgrades or your Captain's Action as a free Action.
When using William T Riker, do you still need to pay the target card's cost for the Free Action?
Deanna Troi
ACTION: Discard this card to target a ship at Range 1-2. Disable the Captain or 1 [crew] Upgrade on the target ship. Place a [battle stations] Token beside your ship. If a target ship is Cloaked, flip its [cloak] Token over to its red side.
Example, would you still need to pay the Discard cost when using Deanna Troi's Action as a Free Action via William T Riker?