playing a UI ace against a shortstack

[gilbert]

BB has two big bets left after he called the raise so they can only call my river raise. what can I not beat? are the odds there to raise and chop with a tie but pay the price with rake?

PokerStars 2/4 Hold'em (6 handed) pokerhand.org hand converter

Preflop: Hero is Button with A[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, BB calls.

Flop: (4.50 SB) 7[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

Turn: (2.25 BB) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

River: (2.25 BB) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets</font>, <font color="#CC3333">Hero raises</font>

[gehrig]

i dont know what this post means

bet the flop tho what are u doing