Set Analysis using same dimension 2x

[#1]

I am trying to write a SET analysis statement that requires me to use the same dimension two times but I am unable to get it to work. Can someone please help me see the error of my ways and help me understand how I should write this statement.

Here is what I have written:

=count({$<UsageFinal = {'0'},UsageFinal = {'1'} ,[Type Final] = {'Windows'}, [RAM] -= '-'>}distinct ID)

Thanks

Tim

[whiteline]

=count({$<UsageFinal = {'0','1'} ,[Type Final] = {'Windows'}, [RAM] -= '-'>}distinct ID)