CCI indicator readings off

I was working on a robot using the CCI stock indicator in cAlgo and noticed a difference between the CCI index reading with the Market Snapshot Tool and the value printed in the Log for the same bar at 19:00 Aug 24, 2017 EURUSD. I then looked at the same bar in Web CTrader and the CCI value. Both indicators in cAlgo and the WebTrader version were using Period 20 (no shift). The robot was responding according to the values printed in the Log and not the readings with the screen tools.

cAlgo Log value    cci:  -123.73064808459

cAlgo Market Snapshot Tool:    Commodity Channel Index  -90

cTrader Web version Market Snapshot Tool:  -69.60814

Code snippet for the cci value:

  private void ManageTrend()
        {

            var ehmaCurrent = _ehma.Result.Last(0);
            var ehmaPrevious = _ehma.Result.Last(3);
            var cciCurrent = _cci.Result.LastValue;



            var ehmaDifference = ehmaCurrent - ehmaPrevious;

            if (cciCurrent > 100 && _cci.Result.IsRising() && ehmaDifference > 0)
            {
                trend = "up";
            }

            else if (cciCurrent < -100 && _cci.Result.IsFalling() && ehmaDifference < 0)
            {
                trend = "down";
            }

            else
            {
                trend = "neutral";
            }

            Print("trend: {0} ; cci: {1};  cci direction: {2};  ehmaDiff: {3}", trend, cciCurrent, _cci.Result.IsRising(), ehmaDifference);
        }

SpotWare, Any ideas on why this is happening?