How add a reference to a project?

[rainfall]

I can call "AddFromFile" function to add a file project to aother project. And add a reference in "OpenProject" events. But in VBA, I just call a function with code:

Sub Foo()
RefProject.test
Normal.test1
test1 'this function in normal will not be recognized
End Sub

in Word, I can call function in normal directly, how to do?