diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..3361fb0
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+jruby-1.7.24
diff --git a/lib/agent_fix/cucumber.rb b/lib/agent_fix/cucumber.rb
index 35a6cff..1319132 100644
--- a/lib/agent_fix/cucumber.rb
+++ b/lib/agent_fix/cucumber.rb
@@ -143,3 +143,26 @@ def anticipate_fix
   
   expect(found).to be(true), "Message not included in FIX messages\n #{error_accum}"
 end
+
+Then(/^the (?:fix|FIX) messages should include a message with(?: the tag)? "(.*)"$/) do |path|
+  expect(@message_scope).not_to be_nil, "No message scope defined"
+
+  found = false
+  error_accum = ""
+  index = 1
+  @message_scope.each do |m|
+    @message = m
+    begin
+      steps %Q{
+When I inspect the #{index}th FIX message
+And the FIX message should have "#{path}"
+      }
+      found = true
+    rescue Exception => e
+      error_accum << "\n#{m.to_s.gsub!(/\001/, '|')}\n #{e}"
+    end
+    index += 1
+  end
+
+  expect(found).to be(true), "Tag not included in FIX messages\n #{error_accum}"
+end