[Closed] NL50 AK linecheck

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.25/$0.5 No-Limit Hold'em (5 handed)

Known players:
[tg]BU$50.00:///////;SB (Hero)$52.65:///////;BB$96.25:///////;MP3$50.00:///////;CO$79.40:///////;[/tg]

Preflop: Hero is SB with K:h, A:c.
MP3 folds, CO raises to $1.75, BU calls $1.75, Hero raises to $6.50, BB folds, CO calls $4.75, BU calls $4.75.

Flop: ($20) J:d, A:s, 2:h (3 players)
Hero bets $14.00, CO calls $14.00, BU folds.

Turn: ($48) 4:s (2 players)
Hero bets $32.15, CO calls $32.15.

River: ($112.3) 9:d (2 players)

Final Pot: $112.3.
Results follow:

CO shows three of a kind, jacks(J:h J:s).
Hero shows a pair of aces(K:h A:c).

CO wins with three of a kind, jacks(J:h J:s).

Is this ok, or am i not beating enough?