void main()
{
    // Get the object that triggered this event.
    object oPC = GetLastUsedBy();
    object oPlaceable = OBJECT_SELF;
    object oArea = GetArea(oPlaceable);

    // Check the cookie type.
    string sCookieType = GetLocalString(oPlaceable, "sCOOKIE_TYPE");

    // Increment the cookie sold count for this placeable.
    int iCookiesSold = GetLocalInt(oPlaceable, "iCookiesSold") + 1;
    SetLocalInt(oPlaceable, "iCookiesSold", iCookiesSold);
}