Cannot make reference to Facebook SDK project

I am tryin to integrate Facebook in my Android app. In some tutorials, I see that I must make a reference to base Facebook project. I try this and all looks like mus开发者_JAVA百科t be: here After that I open properties again and here is result: here There is no connection between the projects.

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Make sure that the Facebook Lib project in your eclipse workspace is/stays open. Otherwise the library won't be found.

This is correct:

and this throws an error since the project is closed: