Trend Line WITH Set Analysis

[jdean1012]

I have a functional Trend line as follows:

linest_m(total aggr(avg([Fare]),[Booking Date]),[Booking Date])*[Booking Date] +
linest_b(total aggr(avg([Fare]),[Booking Date]),[Booking Date])

I'd like to restrict the Trend line measure to [Domestic/International] = 'Domestic'.  But, I cannot seem to quite work out the syntax.

Has anyone done this before?

THANKS

[Anil_Babu_Samineni]

Perhaps this?

linest_m(total aggr(avg({<[Domestic/International] = {'Domestic'}>} [Fare]),[Booking Date]),[Booking Date])*[Booking Date] +linest_b(total aggr(avg({<[Domestic/International] = {'Domestic'}>} [Fare]),[Booking Date]),[Booking Date])