diff --git a/gwt-ol3/src/main/java/org/vaadin/gwtol3/client/Extent.java b/gwt-ol3/src/main/java/org/vaadin/gwtol3/client/Extent.java
index 081fe44..6b40aac 100644
--- a/gwt-ol3/src/main/java/org/vaadin/gwtol3/client/Extent.java
+++ b/gwt-ol3/src/main/java/org/vaadin/gwtol3/client/Extent.java
@@ -1,6 +1,7 @@
 package org.vaadin.gwtol3.client;
 
 import com.google.gwt.core.client.JavaScriptObject;
+import com.google.gwt.core.client.JsArrayNumber;
 
 /**
  * Map extent
@@ -11,6 +12,10 @@ public static native Extent create(double minX, double minY, double maxX, double
         return [minX, minY, maxX, maxY];
     }-*/;
 
+    public static native Extent create(JsArrayNumber extent)/*-{
+        return extent;
+    }-*/;
+
     protected Extent() {
     }