diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/DefNewColumn.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/DefNewColumn.java
index fa857d4..f213dbb 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/DefNewColumn.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/DefNewColumn.java
@@ -15,6 +15,7 @@ public class DefNewColumn implements Serializable {
 
 	private static final long serialVersionUID = 7467523779864189492L;
 
+	protected String id;// For grid and combo only;
 	protected ColumnTypeCode columnType;
 	protected ColumnDataType columnDataType;
 	protected String defaultValue;
@@ -28,7 +29,6 @@ public class DefNewColumn implements Serializable {
 
 	}
 
-	
 	/**
 	 * For Code, CodeDescription and Annotation Column
 	 * 
@@ -39,13 +39,12 @@ public class DefNewColumn implements Serializable {
 	 */
 	public DefNewColumn(String label, ColumnTypeCode columnType,
 			String defaultValue) {
+		this.id = "1";
 		this.label = label;
 		this.columnType = columnType;
 		this.defaultValue = defaultValue;
 	}
 
-	
-	
 	/**
 	 * For Attribute and Measure Column
 	 * 
@@ -56,14 +55,13 @@ public class DefNewColumn implements Serializable {
 	 */
 	public DefNewColumn(String label, ColumnTypeCode columnType,
 			ColumnDataType columnDataType, String defaultValue) {
+		this.id = "1";
 		this.label = label;
 		this.columnType = columnType;
 		this.columnDataType = columnDataType;
 		this.defaultValue = defaultValue;
 	}
 
-	
-	
 	/**
 	 * For CodeName Column
 	 * 
@@ -74,13 +72,13 @@ public class DefNewColumn implements Serializable {
 	 */
 	public DefNewColumn(String label, ColumnTypeCode columnType,
 			String localeName, String defaultValue) {
+		this.id = "1";
 		this.label = label;
 		this.columnType = columnType;
 		this.localeName = localeName;
 		this.defaultValue = defaultValue;
 	}
 
-	
 	/**
 	 * For Dimension
 	 * 
@@ -92,13 +90,14 @@ public class DefNewColumn implements Serializable {
 	 */
 	public DefNewColumn(String label, ColumnTypeCode columnType,
 			ColumnData codelistColumnReference, String defaultValue) {
+		this.id = "1";
 		this.label = label;
 		this.columnType = columnType;
-		this.codelistColumnReference= codelistColumnReference;
+		this.codelistColumnReference = codelistColumnReference;
 		this.defaultValue = defaultValue;
-		
+
 	}
-	
+
 	/**
 	 * For TimeDimension
 	 * 
@@ -110,11 +109,12 @@ public class DefNewColumn implements Serializable {
 	 */
 	public DefNewColumn(String label, ColumnTypeCode columnType,
 			TimeDimensionType timeDimensionType, String defaultValue) {
+		this.id = "1";
 		this.label = label;
 		this.columnType = columnType;
-		this.timeDimensionType=timeDimensionType;
+		this.timeDimensionType = timeDimensionType;
 		this.defaultValue = defaultValue;
-		
+
 	}
 
 	public String getLabel() {
@@ -173,12 +173,20 @@ public class DefNewColumn implements Serializable {
 		this.codelistColumnReference = codelistColumnReference;
 	}
 
+	public String getId() {
+		return id;
+	}
+
+	public void setId(String id) {
+		this.id = id;
+	}
+
 	@Override
 	public String toString() {
-		return "DefNewColumn [columnType=" + columnType + ", columnDataType="
-				+ columnDataType + ", defaultValue=" + defaultValue
-				+ ", label=" + label + ", localeName=" + localeName
-				+ ", timeDimensionType=" + timeDimensionType
+		return "DefNewColumn [id=" + id + ", columnType=" + columnType
+				+ ", columnDataType=" + columnDataType + ", defaultValue="
+				+ defaultValue + ", label=" + label + ", localeName="
+				+ localeName + ", timeDimensionType=" + timeDimensionType
 				+ ", codelistColumnReference=" + codelistColumnReference + "]";
 	}