What's wrong with this?

[VBatla@xxxxxxx]

Any ideas of what's wrong with this code?
TB 



Vars: t1(0), t2(0), t3(0), t4(0), t5(0), t6(0),
      w(0), x(0), y(0), z(0) ;

 t1 = @RSI(Close, 13);
 t2 = @ADX(130);
 t3 = @PercentR(13);
 t4 = @SlowK(130);
 t5 = @XAverage(Close, 13);
 t6 = @XAverage(Close, 130);

 w = @SquareRoot( ((t5+t1)*((0+t5)-t1)) + (t1*t1) ) ;
 x = @SquareRoot( (t2*t2) + ((t2+t6)*((0-t2)+t6)) ) ;
 y = @SquareRoot( ((t3+t4)*((0-t3)+t4)) + (t3*t3) ) ;
 z = (w * @ExpValue(0.0)) + (x - t4) + (y - t5) ;

 if (CurrentBar >= 2) then begin
    if z crosses below w then buy  tomorrow at the open;
    if w crosses below z then sell tomorrow at the open;
 end;