need some help on Calculated Key Figures

Hello All,

I created a query on a multiprovider and trying to add a field to an existing Structure on rows.

The new field is a combination of 5 differnt key figures.

Eg: (KF1KF2KF3KF4KF5) / KF6 * 100.

How can I add this formula field into the strucuture on rows. do i need to create a CKF ??

Thaks in Advacne.