Tinkergraph loses false values if I don't use to_java on them.

lib/pacer/graph/simple_encoder.rb

@@ -1,16 +1,25 @@
 module Pacer
   class SimpleEncoder
+    JBoolean = java.lang.Boolean
+    JFalse = false.to_java
+
     def self.encode_property(value)
       if value.is_a? String
         value = value.strip
         value unless value == ''
+      elsif false == value
+        JFalse
       else
         value
       end
     end
 
     def self.decode_property(value)
-      value
+      if value.is_a? JBoolean and value == JFalse
+        false
+      else
+        value
+      end
     end
   end
 end