Reg. Parse error in line 3

Arun

this is the program

#include "udf.h" #include "random.h" DEFINE_DPM_INJECTION_UNIT(init_random_diameter,I) { particle *p; CX_Message("Initializing Injection: %s with random diameter\n", I->name; loop(p,I->p) { p->flow_rate = 1.e-4; P_DIAM(p) = 1.e-5+fabs(cheap_gauss_random())*1.e-3; P_RHO(p)=1.0; P_MASS(p)=P_RHO(p)*M_PI*pow(P_DIAM(p),3.0)/6.0; } }

when i try to interpret this udf in fluent, it is giving error as parse error in line 3... can anybody please clear the doubt thanks in advance