diff --git a/dev/js/src/vc.js b/dev/js/src/vc.js
index 9d91a62..25e1d97 100644
--- a/dev/js/src/vc.js
+++ b/dev/js/src/vc.js
@@ -74,7 +74,7 @@
   KorAP._validUnspecMatchRE = new RegExp(
     "^(?:eq|ne|contains(?:not)?|excludes)$");
   KorAP._validStringMatchRE = new RegExp("^(?:eq|ne)$");
-  KorAP._validIntegerMatchRE = new RegExp("^(?:[gl]?eq|ne)$");
+  KorAP._validIntegerMatchRE = new RegExp("^(?:[gl]?eq|ne|[gl]t)$");
   KorAP._validTextMatchRE = KorAP._validUnspecMatchRE;
   KorAP._validTextOnlyMatchRE = new RegExp(
     "^(?:contains(?:not)?|excludes)$");
@@ -117,7 +117,9 @@
       [ 'eq', null ],
       [ 'ne', null ],
       [ 'geq', null ],
-      [ 'leq', null ]
+      [ 'leq', null ],
+      [ 'gt', null ],
+      [ 'lt', null ]
     ])
   };
 
diff --git a/dev/js/src/vc/doc.js b/dev/js/src/vc/doc.js
index d504642..8202fb5 100644
--- a/dev/js/src/vc/doc.js
+++ b/dev/js/src/vc/doc.js
@@ -715,7 +715,13 @@
       case "leq":
         string += (this.type() == 'date') ? 'until' : '<=';
         break;
-      default:
+      case "lt":
+        string += '<';
+        break;
+      case "gt":
+        string += '>';
+        break;
+       default:
         string += (this.type() == 'date') ? 'in' : '=';
         break;
       };