diff --git a/app/block_view.rb b/app/block_view.rb
index 74f274c..49ae27b 100644
--- a/app/block_view.rb
+++ b/app/block_view.rb
@@ -18,7 +18,8 @@ class BlockView
   def update_block
     block_name! interpreter.block.name
     codes = interpreter.block.codes.dup
-    codes.shift while( codes.index(interpreter.instruction) > 1 )
+    slice = codes.index(interpreter.instruction) - 1
+    codes.shift( slice ) if slice >= 0
     codes.pop while(codes.length > 4)
     block! codes
   end
diff --git a/app/instruction_view.rb b/app/instruction_view.rb
index a59f126..a9da7c8 100644
--- a/app/instruction_view.rb
+++ b/app/instruction_view.rb
@@ -9,7 +9,6 @@ class InstructionView
   define_state :active => ""
 
   before_mount do
-    interpreter.register_event(:instruction_changed,  self)
     check_active interpreter.instruction
   end
 
diff --git a/app/register_view.rb b/app/register_view.rb
index 839c79f..b3d0234 100644
--- a/app/register_view.rb
+++ b/app/register_view.rb
@@ -26,9 +26,10 @@ class RegisterView
       has_fields = []
       clazz = object.class.name.split("::").last
       puts "found #{clazz}"
-      has_fields <<  clazz
+      has_fields << clazz
       object.get_instance_variables.each do |variable|
-        has_fields << object.get_instance_variable(variable).to_s
+        f = object.get_instance_variable(variable)
+        has_fields << f
       end
       fields! has_fields
     end
@@ -39,12 +40,15 @@ class RegisterView
       div.col_md_12 do
         objects_id.to_s
       end
-      fields.each do |variable|
+      fields.each do |attribute|
         div.col_md_12 do
-          variable.span
+          "#{marker(attribute)} - #{attribute.object_id}".span
         end
       end
     end
   end
 
+  def marker var
+    var.class.name.split("::").last[0]
+  end
 end