diff --git a/src/main/java/com/redislabs/university/RU102J/dao/MetricDaoRedisZsetImpl.java b/src/main/java/com/redislabs/university/RU102J/dao/MetricDaoRedisZsetImpl.java
index 49da2ec..d95aff6 100644
--- a/src/main/java/com/redislabs/university/RU102J/dao/MetricDaoRedisZsetImpl.java
+++ b/src/main/java/com/redislabs/university/RU102J/dao/MetricDaoRedisZsetImpl.java
@@ -5,7 +5,6 @@
 import com.redislabs.university.RU102J.api.MetricUnit;
 import redis.clients.jedis.Jedis;
 import redis.clients.jedis.JedisPool;
-import redis.clients.jedis.Pipeline;
 import redis.clients.jedis.Tuple;
 
 import java.text.DecimalFormat;
@@ -22,10 +21,10 @@
  *
  */
 public class MetricDaoRedisZsetImpl implements MetricDao {
-    static private final Integer MAX_METRIC_RETENTION_DAYS = 30;
-    static private final Integer MAX_DAYS_TO_RETURN = 7;
-    static private final Integer METRICS_PER_DAY = 60 * 24;
-    static private final Integer METRIC_EXPIRATION_SECONDS =
+    private static final Integer MAX_METRIC_RETENTION_DAYS = 30;
+    private static final Integer MAX_DAYS_TO_RETURN = 7;
+    private static final Integer METRICS_PER_DAY = 60 * 24;
+    private static final Integer METRIC_EXPIRATION_SECONDS =
             60 * 60 * 24 * MAX_METRIC_RETENTION_DAYS + 1;
     private final JedisPool jedisPool;
 
@@ -51,6 +50,7 @@ private void insertMetric(Jedis jedis, long siteId, double value, MetricUnit uni
         // START Challenge #2
         String metricKey = RedisSchema.getDayMetricKey(siteId, unit, dateTime);
         Integer minuteOfDay = getMinuteOfDay(dateTime);
+        jedis.zadd(metricKey, minuteOfDay, value + ":" + minuteOfDay);
         // END Challenge #2
     }
 
diff --git a/src/test/java/com/redislabs/university/RU102J/dao/MetricDaoRedisZsetImplTest.java b/src/test/java/com/redislabs/university/RU102J/dao/MetricDaoRedisZsetImplTest.java
index 30e1072..d42e24f 100644
--- a/src/test/java/com/redislabs/university/RU102J/dao/MetricDaoRedisZsetImplTest.java
+++ b/src/test/java/com/redislabs/university/RU102J/dao/MetricDaoRedisZsetImplTest.java
@@ -6,7 +6,6 @@
 import com.redislabs.university.RU102J.api.MetricUnit;
 import org.junit.After;
 import org.junit.Before;
-import org.junit.Ignore;
 import org.junit.Test;
 
 import java.time.ZoneOffset;
@@ -20,8 +19,8 @@
 public class MetricDaoRedisZsetImplTest extends JedisDaoTestBase {
 
     private List<MeterReading> readings;
-    private Long siteId = 1L;
-    private ZonedDateTime startingDate = ZonedDateTime.now(ZoneOffset.UTC);
+    private final Long siteId = 1L;
+    private final ZonedDateTime startingDate = ZonedDateTime.now(ZoneOffset.UTC);
 
     @After
     public void flush() {
@@ -48,14 +47,12 @@ public void generateData() {
     }
 
     // Challenge #2
-    @Ignore
     @Test
     public void testSmall() {
         testInsertAndRetrieve(1);
     }
 
     // Challenge #2
-    @Ignore
     @Test
     public void testOneDay() {
         testInsertAndRetrieve(60 * 24);
@@ -63,7 +60,6 @@ public void testOneDay() {
 
 
     // Challenge #2
-    @Ignore
     @Test
     public void testMultipleDays() {
         testInsertAndRetrieve(60 * 70);