public static object Operation_SetMember(JsObject obj, double index, object value)
{
int intIndex = (int)index;
if (index == intIndex)
{
var arrayStore = obj.PropertyStore as ArrayPropertyStore;
if (arrayStore != null)
{
arrayStore.DefineOrSetPropertyValue(intIndex, value);
return value;
}
}
obj.SetProperty(index, value);
return value;
}