diff --git a/src/com/amarsoft/app/util/ProductParamUtil.java b/src/com/amarsoft/app/util/ProductParamUtil.java
index 236972a80..150cadc31 100644
--- a/src/com/amarsoft/app/util/ProductParamUtil.java
+++ b/src/com/amarsoft/app/util/ProductParamUtil.java
@@ -748,6 +748,7 @@ public class ProductParamUtil {
 						if(ja.get(i) instanceof JSONNull){
 							continue;
 						}
+						if(ja.getJSONObject(i).isNullObject()) continue;
 						JSONObject value = ja.getJSONObject(i).getJSONObject("jbo.sample.DecisionTable");
 						Map<String,Object> valMap = new HashMap<String,Object>();
 						Set<Entry> vSet = value.entrySet();