I can't open spring integration diagram in intellij idea 14

I have a spring configuration file with spring integration flow. I am trying to open the diagram this way:

Right click on the file >Diagrams > Show Diagram..

But it shows me the diagram with simple relationships between tags, not the spring integration diagram.

I have Spring iIntegration Patterns plugin enabled. And dependency to the spring-integrationcore is added to the module.

see also question on  http://stackoverflow.com/questions/27292338/how-to-vizualize-spring-integration-file-in-intellij-idea-14