Can't properly detect when animation is over...

I can usually get enough AI help that I don't need to rely on this forum all the time, but here's another issue that I can't get working, and the AIs are no help at all:

Quickly, here is the intended behavior:

1. The player clicks on a key card (fam_cards.cardType = "key")

2. The key flies to the jail card (fam_cards.cardtype = "jail")

3. Animate the jail card to look like the cell is opening

4. When the animation is finished (frame tag = "done") start a tween (animateCard) to fade the jail card

5. After the jail card fades out, run some JS code and enable a group

What keeps happening:

I can click on the key card and it will correctly fly to the jail card and start the jail card animation. When the animation finishes, nothing happens.

I had similar events before turning to AI. Here is its suggestion:

// 1) Key lands → open the jail (what you already have)
spr_key: On Tween "moveKey" finished
 → spr_key: Destroy
 → System: Pick fam_cards where fam_cards.cardType = "jail"
 → fam_cards: Set animation speed to 8
 → fam_cards: Start animation from current frame

// 2) As soon as that jail hits the “done” tag, fire the fade **once**
fam_cards: On animation frame tag "done"
 System: Trigger once
 → fam_cards: Tween "animateCard" property Opacity to 0 in 3 seconds
 (In Out Sinusoidal, destroy: Yes, loop: No, ping pong: No, repeat count: 1)

// 3) When the fade really does finish, run your JS + re-activate group
fam_cards: On Tween "animateCard" finished
 → Run JavaScript: removeCardIDs(runtime)
 → System: Set group "Face Up or Down" Activated

fam_cards: On animation frame tag "done"

System: Trigger once

Why don't you use "On animation finished" condition?

Also, I've probably mentioned this a thousand times on this forum - never use "Trigger once" with objects that have multiple instances! That's likely the reason why your code doesn't work.