diff --git a/playground/index.html b/playground/index.html
index 8847751e7..4851a490f 100644
--- a/playground/index.html
+++ b/playground/index.html
@@ -397,43 +397,7 @@
               </value>
     		    </block>
           </category>
-          <category name="Data" colour="#FF8C1A">
-            <block type="data_variable">
-              <value name="VARIABLE">
-                <shadow type="data_variablemenu"></shadow>
-              </value>
-            </block>
-            <block type="data_setvariableto">
-              <value name="VARIABLE">
-               <shadow type="data_variablemenu"></shadow>
-              </value>
-              <value name="VALUE">
-                <shadow type="math_number">
-                  <field name="NUM">0</field>
-                </shadow>
-              </value>
-            </block>
-            <block type="data_changevariableby">
-              <value name="VARIABLE">
-               <shadow type="data_variablemenu"></shadow>
-              </value>
-              <value name="VALUE">
-                <shadow type="math_number">
-                  <field name="NUM">0</field>
-                </shadow>
-              </value>
-            </block>
-            <block type="data_showvariable">
-              <value name="VARIABLE">
-               <shadow type="data_variablemenu"></shadow>
-              </value>
-            </block>
-            <block type="data_hidevariable">
-              <value name="VARIABLE">
-               <shadow type="data_variablemenu"></shadow>
-              </value>
-            </block>
-          </category>
+          <category name="Data" colour="#FF8C1A" custom="VARIABLE"></category>
           <category name="Events" colour="#FFD500">
             <block type="event_whenflagclicked"></block>
             <block type="event_whenkeypressed">