private int GetOpenLoopValue(int index)
{
index = (y_axisvalues.Length - 1) - index;
//int retval = (int)open_loop[(open_loop.Length - e.RowHandle) - 1];
int retval = 0;
retval = Convert.ToInt32(open_loop.GetValue(index * 2));
retval *= 256;
retval += Convert.ToInt32(open_loop.GetValue((index * 2) + 1));
return retval;
}