void main()
{
int nIdx=0;
object oFWtroll=(GetObjectByTag("fr_fwatertroll03",nIdx));
object oTroll=(GetObjectByTag("fr_fwtroll03spe"));

//enamble the Encounter at night.
if (GetIsNight())
{
SetEncounterActive(1,oFWtroll);
}
///destroy anything remaining on daylight.
if (GetIsDay())
{
SetEncounterActive(0,oFWtroll);
 while (GetIsObjectValid(oTroll))
       {
       DestroyObject(oTroll);
       nIdx++;
       oTroll=(GetObjectByTag("fr_fwtroll03spe",nIdx));
       }
}
}