--- xmlTools/trunk/posUpdate/XmlTools.cs	2013/03/26 02:30:48	742
+++ xmlTools/trunk/posUpdate/XmlTools.cs	2013/05/08 21:52:38	861
@@ -229,7 +229,7 @@ namespace xmlTools
             List<XmlNode> myElements = new List<XmlNode>();
             Util.getAllSpecificElements(xdoc.DocumentElement, ref myElements, this.posElement, this.posParentElement); //Returns all after "Oni" element
 
-            if (valuePositions == "")
+            if (valuePositions == null)
             {
                 newXmlLastPos = new XmlNumberValue(newValue);
             }
@@ -238,7 +238,7 @@ namespace xmlTools
                 newXmlLastPos = new XmlNumberValue(replaceSpecificPositions(myElements[0].InnerText, newValue, valuePositions));
             }
 
-            if (valuePositions != "")
+            if (valuePositions != null)
             {
                 checkValidSpecificPositions(valuePositions, newValue, myElements[0].InnerText);
             }
@@ -257,7 +257,7 @@ namespace xmlTools
                     }
                     else
                     { // first time just assign to last value
-                        if (valueRelation != "")
+                        if (valueRelation != null)
                         {
                             newXmlLastPos = XmlNumberValue.difference(newXmlLastPos, XmlNumberValue.difference(new XmlNumberValue(valueRelation), xmlCurrValue));
                         }