You create a complex report that features drill down by Country, then by Region and then by City. You need to create a different Page Header section for each drill down level in order to describethe c

You create a complex report that features drill down by Country, then by Region and then by City. You need to create a different Page Header section for each drill down level in order to describethe contents correctly and enable Show All Headers on Drill Down. Which conditional formatting formula will show Page Header bin the Country drill down but not the Region and the City drill downs?