diff --git a/examples/graph3d/example01_basis.html b/examples/graph3d/example01_basis.html
index 4ccc908a..e70eee07 100644
--- a/examples/graph3d/example01_basis.html
+++ b/examples/graph3d/example01_basis.html
@@ -20,15 +20,16 @@
     // Called when the Visualization API is loaded.
     function drawVisualization() {
       // Create and populate a data table.
-      var data = new vis.DataSet();
+      data = new vis.DataSet();
       // create some nice looking data with sin/cos
+      var counter = 0;
       var steps = 50;  // number of datapoints will be steps*steps
       var axisMax = 314;
       var axisStep = axisMax / steps;
       for (var x = 0; x < axisMax; x+=axisStep) {
         for (var y = 0; y < axisMax; y+=axisStep) {
           var value = custom(x,y);
-          data.add({x:x,y:y,z:value,style:value});
+          data.add({id:counter++,x:x,y:y,z:value,style:value});
         }
       }
 
diff --git a/examples/graph3d/example02_camera.html b/examples/graph3d/example02_camera.html
index 2d560338..07847c81 100644
--- a/examples/graph3d/example02_camera.html
+++ b/examples/graph3d/example02_camera.html
@@ -45,7 +45,7 @@
     // Called when the Visualization API is loaded.
     function drawVisualization() {
       // Create and populate a data table.
-      var data = new vis.DataSet();
+      data = new vis.DataSet();
       // create some nice looking data with sin/cos
       var steps = 50;  // number of datapoints will be steps*steps
       var axisMax = 314;
diff --git a/examples/graph3d/example03_filter.html b/examples/graph3d/example03_filter.html
index ca0b0d3e..03259761 100644
--- a/examples/graph3d/example03_filter.html
+++ b/examples/graph3d/example03_filter.html
@@ -20,7 +20,7 @@
     // Called when the Visualization API is loaded.
     function drawVisualization() {
       // Create and populate a data table.
-      var data = [];
+      data = [];
       // create some nice looking data with sin/cos
       var steps = 50;  // number of datapoints will be steps*steps
       var axisMax = 314;
diff --git a/examples/graph3d/example05_line.html b/examples/graph3d/example05_line.html
index 3a433c35..a5243907 100644
--- a/examples/graph3d/example05_line.html
+++ b/examples/graph3d/example05_line.html
@@ -16,7 +16,7 @@
     // Called when the Visualization API is loaded.
     function drawVisualization() {
       // Create and populate a data table.
-      var data = new vis.DataSet();
+      data = new vis.DataSet();
 
       // create some nice looking data with sin/cos
       var steps = 500;
diff --git a/examples/graph3d/example06_moving_dots.html b/examples/graph3d/example06_moving_dots.html
index e6ebc89f..c0f6b475 100644
--- a/examples/graph3d/example06_moving_dots.html
+++ b/examples/graph3d/example06_moving_dots.html
@@ -16,7 +16,7 @@
     // Called when the Visualization API is loaded.
     function drawVisualization() {
       // create the data table.
-      var data = new vis.DataSet();
+      data = new vis.DataSet();
 
       // create some shortcuts to math functions
       var sin = Math.sin;
diff --git a/examples/graph3d/example07_dot_cloud_colors.html b/examples/graph3d/example07_dot_cloud_colors.html
index 9b90289e..c74fc5c1 100644
--- a/examples/graph3d/example07_dot_cloud_colors.html
+++ b/examples/graph3d/example07_dot_cloud_colors.html
@@ -17,7 +17,8 @@
     // Called when the Visualization API is loaded.
     function drawVisualization() {
       // create the data table.
-      var data = new vis.DataSet();
+      data = new vis.DataSet();
+
       // create some shortcuts to math functions
       var sqrt = Math.sqrt;
       var pow = Math.pow;
diff --git a/examples/graph3d/example08_dot_cloud_size.html b/examples/graph3d/example08_dot_cloud_size.html
index b5b6cfac..219cb33a 100644
--- a/examples/graph3d/example08_dot_cloud_size.html
+++ b/examples/graph3d/example08_dot_cloud_size.html
@@ -15,7 +15,7 @@
     // Called when the Visualization API is loaded.
     function drawVisualization() {
       // create the data table.
-      var data = new vis.DataSet();
+      data = new vis.DataSet();
 
       // create some shortcuts to math functions
       var sqrt = Math.sqrt;
diff --git a/examples/graph3d/example09_mobile.html b/examples/graph3d/example09_mobile.html
index b93737c1..a74e81ec 100644
--- a/examples/graph3d/example09_mobile.html
+++ b/examples/graph3d/example09_mobile.html
@@ -35,7 +35,7 @@
     // Called when the Visualization API is loaded.
     function drawVisualization() {
       // Create and populate a data table.
-      var data = new vis.DataSet();
+      data = new vis.DataSet();
 
       // create some nice looking data with sin/cos
       var steps = 10;  // number of datapoints will be steps*steps
diff --git a/examples/graph3d/example10_styles.html b/examples/graph3d/example10_styles.html
index b5cab109..37178077 100644
--- a/examples/graph3d/example10_styles.html
+++ b/examples/graph3d/example10_styles.html
@@ -26,7 +26,7 @@
       var withValue = ['bar-color', 'bar-size', 'dot-size', 'dot-color'].indexOf(style) != -1;
 
       // Create and populate a data table.
-      var data = [];
+      data = [];
 
       // create some nice looking data with sin/cos
       var steps = 5;  // number of datapoints will be steps*steps
diff --git a/examples/graph3d/example11_tooltips.html b/examples/graph3d/example11_tooltips.html
index c1af9852..9cd07766 100644
--- a/examples/graph3d/example11_tooltips.html
+++ b/examples/graph3d/example11_tooltips.html
@@ -23,7 +23,7 @@
       var withValue = ['bar-color', 'bar-size', 'dot-size', 'dot-color'].indexOf(style) != -1;
 
       // Create and populate a data table.
-      var data = new vis.DataSet();
+      data = new vis.DataSet();
 
       // create some nice looking data with sin/cos
       var steps = 5;  // number of datapoints will be steps*steps