I had a scenario, where I need filter an LOV based on a global variable.
So to do that I created a Bind Variable (called MasterId) in the main View Object.
Then, I assigned the LOV View to the right attribute in the main View Object.
Next, in the LOV menu, you put the value of the bind variable as adf.object.viewObject.
And Voila! Hope this quick tip helps someone.