diff --git a/lib/sof/writer.rb b/lib/sof/writer.rb
index c0aee216..d3f60ced 100644
--- a/lib/sof/writer.rb
+++ b/lib/sof/writer.rb
@@ -35,10 +35,11 @@ module Sof
         return SimpleNode.new( object.name )
       end
       head = object.class.name + "("
-      atts = attributes_for(object).inject({}) do |hash , a| 
+      atts = {}
+      attributes_for(object).each() do |a| 
         val = get_value(object , a)
-        hash[a] =  to_sof_node(val , level + 1)
-        hash
+        next if val.nil?
+        atts[a] =  to_sof_node(val , level + 1)
       end
       immediate , extended = atts.partition {|a,val| val.is_a?(SimpleNode) }
       head += immediate.collect {|a,val| "#{a.to_sof()} => #{val.data}"}.join(", ") + ")"
diff --git a/lib/virtual/instruction.rb b/lib/virtual/instruction.rb
index ca952e56..b18799df 100644
--- a/lib/virtual/instruction.rb
+++ b/lib/virtual/instruction.rb
@@ -83,5 +83,11 @@ module Virtual
     end
     attr_reader :to , :from
   end
-
+  
+  class ObjectGet < Instruction
+    def initialize name
+      @name = name.to_sym
+    end
+    attr_reader :name
+  end
 end
diff --git a/test/virtual/test_methods.rb b/test/virtual/test_methods.rb
index d00f9abf..12a46979 100644
--- a/test/virtual/test_methods.rb
+++ b/test/virtual/test_methods.rb
@@ -30,7 +30,7 @@ def String.length(x)
   @length
 end
 HERE
-    @output = ""
+    @output = "---RETURN_MARKER- &7 !ruby/object:Virtual::MethodDefinitionRETURN_MARKER  name: :lengthRETURN_MARKER  args:RETURN_MARKER  - :xRETURN_MARKER  locals: []RETURN_MARKER  tmps: []RETURN_MARKER  receiver: &6 !ruby/object:Boot::BootClassRETURN_MARKER    method_definitions:RETURN_MARKER    - &2 !ruby/object:Virtual::MethodDefinitionRETURN_MARKER      name: :getRETURN_MARKER      args:RETURN_MARKER      - &1 !ruby/class 'Virtual::Integer'RETURN_MARKER      locals: []RETURN_MARKER      tmps: []RETURN_MARKER      receiver: *1RETURN_MARKER      return_type: *1RETURN_MARKER      blocks:RETURN_MARKER      - &3 !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :getRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER      - !ruby/object:Virtual::BlockRETURN_MARKER        method: *2RETURN_MARKER        name: :get_returnRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER      current: *3RETURN_MARKER    - &4 !ruby/object:Virtual::MethodDefinitionRETURN_MARKER      name: :setRETURN_MARKER      args:RETURN_MARKER      - *1RETURN_MARKER      - *1RETURN_MARKER      locals: []RETURN_MARKER      tmps: []RETURN_MARKER      receiver: *1RETURN_MARKER      return_type: *1RETURN_MARKER      blocks:RETURN_MARKER      - &5 !ruby/object:Virtual::BlockRETURN_MARKER        method: *4RETURN_MARKER        name: :setRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER      - !ruby/object:Virtual::BlockRETURN_MARKER        method: *4RETURN_MARKER        name: :set_returnRETURN_MARKER        branch: RETURN_MARKER        codes:RETURN_MARKER        - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER      current: *5RETURN_MARKER    name: :StringRETURN_MARKER    super_class_name: :ObjectRETURN_MARKER    meta_class: !ruby/object:Boot::MetaClassRETURN_MARKER      functions: []RETURN_MARKER      me_self: *6RETURN_MARKER  return_type: !ruby/object:Virtual::ReturnRETURN_MARKER    index: 0RETURN_MARKER    type: !ruby/object:Virtual::Mystery {}RETURN_MARKER  blocks:RETURN_MARKER  - &8 !ruby/object:Virtual::BlockRETURN_MARKER    method: *7RETURN_MARKER    name: :lengthRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodEnter {}RETURN_MARKER    - !ruby/object:Virtual::ObjectGetRETURN_MARKER      name: :lengthRETURN_MARKER  - !ruby/object:Virtual::BlockRETURN_MARKER    method: *7RETURN_MARKER    name: :length_returnRETURN_MARKER    branch: RETURN_MARKER    codes:RETURN_MARKER    - !ruby/object:Virtual::MethodReturn {}RETURN_MARKER  current: *8RETURN_MARKER"
     check
   end