help problem with "syntax error"

Bo

I write a udf to define the velocity profile. It can run very well in old fluent version. But when it run in new version, it always show "syntax error". Who knows how to solve this problem. pls. give me a favor.

Thanks very much

#include "udf.h"

DEFINE_PROFILE(pump_velocity,thread,position)

{

face_t f;

real t = CURRENT_TIME, tt;

real interval = 0.5;

int on, s;

if (t>0 || t<0.5) t=t;

else t= 1-t;

s = (int)(t/interval);

tt = t - (real)(s*interval);

on = tt < 0.25 ? 1 : 0;

begin_f_loop(f, thread)

{

F_PROFILE(f, thread, position) = 0.00104405*on*sin(4*M_PI*tt);

}

end_f_loop(f, thread)

}