[Hell]

Hi everyone;
I'm completely new in this forum.
I need to get the y coordinate of the first cell with zero velocity in the y axis. X and Z coordinate are fixed to zero.
I'm running a transient simulation and I'm intending to store the y-coordinate in a C_UDMI so I can get the time-dependent plot of this variable.
I'm kind of messed with the loop I need to use and also with the kind of predefined function (define_adjust?)
I pasted the "idea" I've got right now to try to explain it better.

DEFINE_ADJUST(my_adjust,d)

{
cell_t c;
Thread *t;
real xc[ND_ND];
xc[1]=0.0;
xc[2]=5.005;
xc[3]=0.0;
real v_zero=1.0;

C_CENTROID(xc,c,t);

if (C_V(c,t)!=0.0 )
xc[2]=xc[2]+0.005;
v_zero=C_V(c,t);
else
C_UDMI(c,t,0)=xc[2];

}

Thanks in advance
Elena