diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/iob/iobCobCalculator/GlucoseStatus.java b/app/src/main/java/info/nightscout/androidaps/plugins/iob/iobCobCalculator/GlucoseStatus.java
index 191ce9e1cd..f2cb7502f0 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/iob/iobCobCalculator/GlucoseStatus.java
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/iob/iobCobCalculator/GlucoseStatus.java
@@ -26,6 +26,8 @@ public class GlucoseStatus {
     public double short_avgdelta = 0d;
     public double long_avgdelta = 0d;
     public long date = 0L;
+    public long previous_date = 0L;
+    public double prev_glucose = 0d;
 
 
     public String log() {
@@ -58,6 +60,8 @@ public class GlucoseStatus {
         // load 45min
         //long fromtime = DateUtil.now() - 60 * 1000L * 45;
         //List<BgReading> data = MainApp.getDbHelper().getBgreadingsDataFromTime(fromtime, false);
+        long prevDate = 0;
+        double prevValue = 0;
 
         synchronized (IobCobCalculatorPlugin.getPlugin().getDataLock()) {
 
@@ -94,6 +98,9 @@ public class GlucoseStatus {
                 status.long_avgdelta = 0d;
                 status.avgdelta = 0d; // for OpenAPS MA
                 status.date = now_date;
+                status.previous_date = prevDate; // setting the previous value date for slope calculation
+                status.prev_glucose = prevValue;
+
                 if (L.isEnabled(L.GLUCOSE))
                     log.debug("sizeRecords==1");
                 return status.round();
@@ -118,6 +125,11 @@ public class GlucoseStatus {
                     // multiply by 5 to get the same units as delta, i.e. mg/dL/5m
                     change = now.value - then.value;
                     avgdelta = change / minutesago * 5;
+                    // save the value of date if it was 5 min ago or less than 10 min
+                    if( minutesago >= 5 && minutesago < 10 ) {
+                        prevDate = then_date;
+                        prevValue = then.value;
+                    }
 
                     if (L.isEnabled(L.GLUCOSE))
                         log.debug(then.toString() + " minutesago=" + minutesago + " avgdelta=" + avgdelta);