diff --git a/.settings/org.eclipse.wst.common.component b/.settings/org.eclipse.wst.common.component
index 77abfbb00..113dae8a8 100644
--- a/.settings/org.eclipse.wst.common.component
+++ b/.settings/org.eclipse.wst.common.component
@@ -1,5 +1,6 @@
-<project-modules id="moduleCoreId" project-version="2.0">
+<?xml version="1.0" encoding="UTF-8"?>
+<project-modules id="moduleCoreId" project-version="1.5.0">
   <wb-module deploy-name="datastore-graph">
     <wb-resource deploy-path="/" source-path="src/main/java"/>
   </wb-module>
-</project-modules>
\ No newline at end of file
+</project-modules>
diff --git a/src/main/java/org/springframework/persistence/graph/neo4j/Neo4jNodeBacking.aj b/src/main/java/org/springframework/persistence/graph/neo4j/Neo4jNodeBacking.aj
index b0573853b..f331bea22 100644
--- a/src/main/java/org/springframework/persistence/graph/neo4j/Neo4jNodeBacking.aj
+++ b/src/main/java/org/springframework/persistence/graph/neo4j/Neo4jNodeBacking.aj
@@ -97,6 +97,10 @@ public aspect Neo4jNodeBacking extends AbstractTypeAnnotatingMixinFields<GraphEn
 		return underlyingNode;
 	}
 
+	public long NodeBacked.getId() {
+		return underlyingNode.getId();
+	}
+
 	
 	//-------------------------------------------------------------------------
 	// Equals and hashCode for Neo4j entities.
@@ -140,7 +144,8 @@ public aspect Neo4jNodeBacking extends AbstractTypeAnnotatingMixinFields<GraphEn
 			FieldSignature fieldSignature=(FieldSignature) thisJoinPoint.getSignature();
 			Field f = fieldSignature.getField();
 			// TODO fix arrays
-			if (f.getType().isPrimitive() || f.getType().equals(String.class)) {
+			Class fieldType=f.getType();
+			if (isPropertyType(fieldType)) {
 				String propName = getNeo4jPropertyName(f);
 				entity.getUnderlyingNode().setProperty(propName, newVal);
 				log.info("SET " + f + " -> Neo4J simple node property [" + propName + "] with value=[" + newVal + "]");
@@ -159,6 +164,11 @@ public aspect Neo4jNodeBacking extends AbstractTypeAnnotatingMixinFields<GraphEn
 			throw new InvalidDataAccessResourceUsageException("Not in a Neo4j transaction.", e);
 		}
 	}
+
+	private boolean isPropertyType(Class fieldType) {
+	  return fieldType.isPrimitive() || fieldType.equals(String.class) || (fieldType.getName().startsWith("java.lang") && Number.class.isAssignableFrom(fieldType));
+	  // TODO boolean, arrays, character
+	}
 	
 	private boolean isSingleRelationshipField(Field f) {
 		return f.getType().isAnnotationPresent(GraphEntity.class);
@@ -199,7 +209,7 @@ public aspect Neo4jNodeBacking extends AbstractTypeAnnotatingMixinFields<GraphEn
 				return new OneToNRelationshipInfo(DynamicRelationshipType.withName(relAnnotation.type()), 
 						relAnnotation.direction().toNeo4jDir(), relAnnotation.elementClass(), graphEntityInstantiator);
 			}
-			throw new IllegalArgumentException("Not a Neo4j relationship field.");
+			throw new IllegalArgumentException("Not a Neo4j relationship field: "+field);
 		}
 
 		private static boolean isSingleRelationshipField(Field f) {
diff --git a/src/test/java/org/springframework/persistence/test/Person.java b/src/test/java/org/springframework/persistence/test/Person.java
index 064b0fbc4..f93ae79fb 100644
--- a/src/test/java/org/springframework/persistence/test/Person.java
+++ b/src/test/java/org/springframework/persistence/test/Person.java
@@ -16,6 +16,8 @@ public class Person {
 	
 	private int age;
 
+	private Short height;
+
 	Person spouse;
 	
 	@Relationship(type="mother", direction=Direction.OUTGOING)
@@ -62,6 +64,15 @@ public class Person {
 	public void setAge(int age) {
 		this.age = age;
 	}
+	
+	public Short getHeight() {
+		return height;
+	}
+
+	public void setHeight(Short height) {
+		this.height = height;
+	}
+
 
 	public Person getSpouse() {
 		return spouse;
diff --git a/src/test/java/org/springframework/persistence/test/Person_Graph_Entity.aj b/src/test/java/org/springframework/persistence/test/Person_Graph_Entity.aj
index b33431f30..750cfb318 100644
--- a/src/test/java/org/springframework/persistence/test/Person_Graph_Entity.aj
+++ b/src/test/java/org/springframework/persistence/test/Person_Graph_Entity.aj
@@ -39,11 +39,6 @@ privileged aspect Person_Graph_Entity {
 	public Person.new(Node node) {
 		setUnderlyingNode(node);
 	}
-	
-	public Long Person.getId() {
-        return getUnderlyingNode().getId();
-    }
-    
 
 	public static long Person.countPeople() {
 		return Neo4jHelper.count(Person.class, Person_Graph_Entity.graphDatabaseService());
diff --git a/src/test/java/org/springframework/persistence/test/graph/Neo4jGraphPersistenceTest.java b/src/test/java/org/springframework/persistence/test/graph/Neo4jGraphPersistenceTest.java
index 4d3178ab3..3e2177815 100644
--- a/src/test/java/org/springframework/persistence/test/graph/Neo4jGraphPersistenceTest.java
+++ b/src/test/java/org/springframework/persistence/test/graph/Neo4jGraphPersistenceTest.java
@@ -66,8 +66,10 @@ public class Neo4jGraphPersistenceTest {
 		Person p = new Person("Foo", 2);
 		p.setName("Michael");
 		p.setAge(35);
+		p.setHeight((short)182);
 		Assert.assertEquals("Michael", p.getUnderlyingNode().getProperty("Person.name"));
 		Assert.assertEquals(35, p.getUnderlyingNode().getProperty("Person.age"));
+		Assert.assertEquals((short)182, p.getUnderlyingNode().getProperty("Person.height"));
 	}
 	
 	@Test
@@ -168,7 +170,7 @@ public class Neo4jGraphPersistenceTest {
 		} finally {
 			tx.finish();
 		}
-		Assert.assertEquals("Wrong age.", 35, p.getAge());
+		Assert.assertEquals("Wrong age.", (int)35, p.getAge());
 	}
 	
 	@Test(expected = InvalidDataAccessApiUsageException.class)