diff --git a/ureport2-console/.gitignore b/ureport2-console/.gitignore
new file mode 100644
index 0000000..b83d222
--- /dev/null
+++ b/ureport2-console/.gitignore
@@ -0,0 +1 @@
+/target/
diff --git a/ureport2-console/src/main/java/com/bstek/ureport/console/html/HtmlPreviewServletAction.java b/ureport2-console/src/main/java/com/bstek/ureport/console/html/HtmlPreviewServletAction.java
index 6c13606..c777e8f 100644
--- a/ureport2-console/src/main/java/com/bstek/ureport/console/html/HtmlPreviewServletAction.java
+++ b/ureport2-console/src/main/java/com/bstek/ureport/console/html/HtmlPreviewServletAction.java
@@ -312,7 +312,7 @@ public class HtmlPreviewServletAction extends RenderPageServletAction {
 			}
 			String name=obj.toString();
 			String value=req.getParameter(name);
-			if(name==null || value==null || name.startsWith("_")){
+			if(name==null || value==null || (name.startsWith("_") && !name.equals("_n"))){
 				continue;
 			}
 			if(sb.length()>0){