Spot to bluff with 77 on river

[Indomitus]

No-Limit Texas Hold'em (NL100), $1.00 BB (6 handed)

SB ($121.4)
BB ($31.87)
MP2 ($74.1)
MP3 ($102)
Hero ($234.8)
Button ($184.46)

SB: Post SB $0.50
BB: Post BB $1.00

Preflop:
Hero is CO with 7[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/club.gif[/img]
<font color="#666666">1 folds</font>
MP3 Raise $4
Hero Call $4
<font color="#666666">3 folds</font>

Flop:($9.5) 6[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img]<font color="#0030DD">(2 players)</font>
MP3 Check
Hero Check

Turn:($9.5) 2[img]/images/graemlins/heart.gif[/img]<font color="#0030DD">(2 players)</font>
MP3 Check
Hero Bet $7
MP3 Call $7

River:($23.5) 2[img]/images/graemlins/spade.gif[/img]<font color="#0030DD">(2 players)</font>
MP3 Check
Hero Bet $17
MP3 Call $17


MP3 has Q [img]/images/graemlins/spade.gif[/img] Q [img]/images/graemlins/heart.gif[/img]

Total pot $54.65 Rake $2.85
MP3: wins $54.65


I played along on that table about 120 hands.Villain played with me last 42 hands.I was running 27/22.His stats 16/14.
I decided not to bet flop because he might check Ace here.
His turn check shoved me weakness so i did bet.On river when he checked i put him on JJ or maybe 1010 and decided to bluff here trying to represent smth like AQ,AJ.I thought that he can lay it down.Well as u see it didn't worked.Do u think my line here was good?