I do now!
DATA_SECTION
PARAMETER_SECTION
init_number x
objective_function_value f
PROCEDURE_SECTION
dvariable u=myrec(x);
f=square(u-.6);
GLOBALS_SECTION
#include <admodel.h>
int count=0;
dvariable myrec(const prevariable& v)
{
if (count++>10)
return sin(v);
else
return sin(myrec(v));
}