50NL - missed value?

[cashstrapped]

hey guys, new to 2+2. Im not too sure about my river play here and whether i should have bet it or not. what do you guys think?


PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($53.75)
UTG ($74.20)
Hero ($48.85)
CO ($47.25)
Button ($55.55)
SB ($58.70)

Preflop: Hero is MP with J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">UTG raises to $2</font>, Hero calls $2, <font color="#666666">2 folds</font>, SB calls $1.75, <font color="#666666">1 fold</font>.

Flop: ($6.50) K[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">UTG bets $4</font>, <font color="#CC3333">Hero raises to $10</font>, SB folds, UTG calls $6.

Turn: ($26.50) 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets $12</font>, UTG calls $12.

River: ($50.50) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, Hero checks.

Final Pot: $50.50