diff --git a/imixs-workflow-core/src/main/java/org/imixs/workflow/xml/XMLItemCollectionAdapter.java b/imixs-workflow-core/src/main/java/org/imixs/workflow/xml/XMLItemCollectionAdapter.java
index d7084d5a1..ce31f30ea 100644
--- a/imixs-workflow-core/src/main/java/org/imixs/workflow/xml/XMLItemCollectionAdapter.java
+++ b/imixs-workflow-core/src/main/java/org/imixs/workflow/xml/XMLItemCollectionAdapter.java
@@ -43,6 +43,7 @@
 import javax.xml.bind.JAXBContext;
 import javax.xml.bind.JAXBException;
 import javax.xml.bind.Unmarshaller;
+import javax.xml.datatype.XMLGregorianCalendar;
 
 import org.imixs.workflow.ItemCollection;
 
@@ -61,15 +62,21 @@ public class XMLItemCollectionAdapter {
 			.getLogger(XMLItemCollectionAdapter.class.getName());
 
 	/**
-	 * This Methode converts a <code>org.imixs.workflow.service.ItemArray</code>
-	 * into a <code> org.imixs.workflow.ItemCollection</code> Returns null if
-	 * ItemArray == null
+	 * This Methode converts a
+	 * <code>org.imixs.workflow.xml.XMLItemCollection</code> into a
+	 * <code> org.imixs.workflow.ItemCollection</code> Returns null if entity ==
+	 * null
 	 * 
-	 * @param ItemArray
+	 * issue #52:
+	 * 
+	 * We convert XMLGregorianCalendar into java.util.Date objects
+	 * 
+	 * @param entity
 	 * @return ItemCollection
 	 */
 	@SuppressWarnings({ "unchecked", "rawtypes" })
-	public static ItemCollection getItemCollection(XMLItemCollection entity) {
+	public static ItemCollection getItemCollection(
+			final XMLItemCollection entity) {
 		ItemCollection itemCol = new ItemCollection();
 		if (entity == null)
 			return itemCol;
@@ -87,9 +94,11 @@ public static ItemCollection getItemCollection(XMLItemCollection entity) {
 						// no value found
 						itemCol.replaceItemValue(key, new Vector());
 					} else {
-						Vector myVector = new Vector(Arrays.asList(it
-								.getValue()));
-						itemCol.replaceItemValue(key, myVector);
+						// test the content for GregorianCalendar... (issue #52)
+						Object[] objectArray = convertXMLGregorianCalendar(it
+								.getValue());
+						itemCol.replaceItemValue(key,
+								new Vector(Arrays.asList(objectArray)));
 					}
 				}
 		} catch (Exception e) {
@@ -118,7 +127,7 @@ public static ItemCollection getItemCollection(XMLItemCollection entity) {
 	 */
 	@SuppressWarnings({ "unchecked" })
 	public static XMLItemCollection putItemCollection(
-			ItemCollection aItemCollection, List<String> itemNames)
+			final ItemCollection aItemCollection, final List<String> itemNames)
 			throws Exception {
 		String sName = null;
 		XMLItemCollection entity = new XMLItemCollection();
@@ -205,7 +214,7 @@ public static XMLItemCollection putItemCollection(
 	 *            Collection Object to be converted
 	 */
 	public static XMLItemCollection putItemCollection(
-			ItemCollection aItemCollection) throws Exception {
+			final ItemCollection aItemCollection) throws Exception {
 		return putItemCollection(aItemCollection, null);
 	}
 
@@ -217,8 +226,8 @@ public static XMLItemCollection putItemCollection(
 	 * @return
 	 * @throws Exception
 	 */
-	public static EntityCollection putCollection(Collection<ItemCollection> col)
-			throws Exception {
+	public static EntityCollection putCollection(
+			final Collection<ItemCollection> col) throws Exception {
 
 		return putCollection(col, null);
 	}
@@ -239,7 +248,7 @@ public static EntityCollection putCollection(Collection<ItemCollection> col)
 	 * @throws Exception
 	 */
 	public static EntityCollection putCollection(
-			Collection<ItemCollection> col, List<String> itemNames)
+			final Collection<ItemCollection> col, final List<String> itemNames)
 			throws Exception {
 		EntityCollection entiCol = new EntityCollection();
 		Iterator<ItemCollection> it = col.iterator();
@@ -402,4 +411,22 @@ private static byte[] getBytesFromStream(InputStream is) throws IOException {
 		is.close();
 		return buffer.toByteArray();
 	}
+
+	/**
+	 * This helper method converts instances of XMLGregorianCalendar into
+	 * java.util.Date objects.
+	 *
+	 */
+	private static Object[] convertXMLGregorianCalendar(
+			final Object[] objectArray) {
+		// test the content for GregorianCalendar... (issue #52)
+		for (int j = 0; j < objectArray.length; j++) {
+			if (objectArray[j] instanceof XMLGregorianCalendar) {
+				XMLGregorianCalendar xmlCal = (XMLGregorianCalendar) objectArray[j];
+				// convert into Date object
+				objectArray[j] = xmlCal.toGregorianCalendar().getTime();
+			}
+		}
+		return objectArray;
+	}
 }
diff --git a/imixs-workflow-core/src/test/java/org/imixs/workflow/xml/TestXMLItemCollectionAdapter.java b/imixs-workflow-core/src/test/java/org/imixs/workflow/xml/TestXMLItemCollectionAdapter.java
new file mode 100644
index 000000000..fbbd52ddb
--- /dev/null
+++ b/imixs-workflow-core/src/test/java/org/imixs/workflow/xml/TestXMLItemCollectionAdapter.java
@@ -0,0 +1,141 @@
+package org.imixs.workflow.xml;
+
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.List;
+
+import javax.xml.datatype.DatatypeConfigurationException;
+import javax.xml.datatype.DatatypeFactory;
+import javax.xml.datatype.XMLGregorianCalendar;
+
+import org.imixs.workflow.ItemCollection;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Test class for xmlItemCollection object
+ * 
+ * @author rsoika
+ * 
+ */
+public class TestXMLItemCollectionAdapter {
+
+	@Test
+	public void testItemCollection() {
+		ItemCollection itemCollection = new ItemCollection();
+		itemCollection.replaceItemValue("txtTitel", "Hello");
+		XMLItemCollection xmlItemCollection = null;
+		try {
+			xmlItemCollection = XMLItemCollectionAdapter
+					.putItemCollection(itemCollection);
+		} catch (Exception e) {
+			e.printStackTrace();
+			Assert.fail();
+		}
+
+		ItemCollection col2 = XMLItemCollectionAdapter
+				.getItemCollection(xmlItemCollection);
+
+		Assert.assertEquals(itemCollection.getItemValueString("txttitel"),
+				"Hello");
+
+		Assert.assertEquals(col2.getItemValueString("txttitel"), "Hello");
+	}
+
+	/**
+	 * test convertion of date values
+	 */
+	@Test
+	public void testDateValue() {
+		ItemCollection itemCollection = new ItemCollection();
+
+		Date datTest = new Date();
+		itemCollection.replaceItemValue("datDate", datTest);
+
+		XMLItemCollection xmlItemCollection = null;
+		try {
+			xmlItemCollection = XMLItemCollectionAdapter
+					.putItemCollection(itemCollection);
+		} catch (Exception e) {
+			e.printStackTrace();
+			Assert.fail();
+		}
+
+		ItemCollection col2 = XMLItemCollectionAdapter
+				.getItemCollection(xmlItemCollection);
+
+		// test if date is equals
+		Assert.assertEquals(col2.getItemValueDate("datDate"),
+				itemCollection.getItemValueDate("datDate"));
+
+		Assert.assertEquals(col2.getItemValueDate("datDate"), datTest);
+
+	}
+
+	/**
+	 * Issue #52
+	 * 
+	 * Test conversion of XMLGregorianCalener Instances
+	 * 
+	 * @see http://stackoverflow.com/questions/835889/java-util-date-to-
+	 *      xmlgregoriancalendar
+	 */
+	@SuppressWarnings({ "rawtypes" })
+	@Test
+	public void testXMLGregrianCalendar() {
+
+		// first we test normal date objects
+
+		Date datTest = new Date();
+
+		XMLItemCollection xmlItemCollection = new XMLItemCollection();
+		XMLItem xmlItem = new XMLItem();
+		xmlItem.setName("datdate");
+		xmlItem.setValue(new Object[] { datTest });
+		XMLItem[] xmlItemList = new XMLItem[] { xmlItem };
+		xmlItemCollection.setItem(xmlItemList);
+
+		ItemCollection itemCollection = XMLItemCollectionAdapter
+				.getItemCollection(xmlItemCollection);
+		Assert.assertEquals(itemCollection.getItemValueDate("datdate"), datTest);
+
+		/*
+		 * Test phase II.
+		 */
+
+		// now we repeat the test with an XMLGregorianCalneder Object...
+		XMLGregorianCalendar xmlDate = null;
+		try {
+			GregorianCalendar c = new GregorianCalendar();
+			c.setTime(datTest);
+			xmlDate = DatatypeFactory.newInstance().newXMLGregorianCalendar(c);
+		} catch (DatatypeConfigurationException e) {
+
+			e.printStackTrace();
+			Assert.fail();
+		}
+		xmlItemCollection = new XMLItemCollection();
+		xmlItem = new XMLItem();
+		xmlItem.setName("datdate");
+		xmlItem.setValue(new Object[] { xmlDate });
+		xmlItemList = new XMLItem[] { xmlItem };
+		xmlItemCollection.setItem(xmlItemList);
+
+		itemCollection = XMLItemCollectionAdapter
+				.getItemCollection(xmlItemCollection);
+
+		// now we expect that the XMLItemCollectionAdapter has converted
+		// the XMLGregorianCalendar impl into a java.util.Date object
+
+		List resultDate = itemCollection.getItemValue("datdate");
+		Assert.assertNotNull(resultDate);
+		Assert.assertEquals(1, resultDate.size());
+		
+		Assert.assertFalse(resultDate.get(0) instanceof XMLGregorianCalendar);
+		Assert.assertTrue(resultDate.get(0) instanceof java.util.Date);
+
+		Assert.assertEquals(itemCollection.getItemValueDate("datdate"), datTest);
+
+	}
+
+}