I'm Having Trouble SetBodyPageUsage

[CSzydlowski]

I am using this rule to change a page at the field change to add a cover page to a section.

FusionPro.Composition.SetBodyPageUsage("Cover", FieldChanged("MemberIDend"));

This works as single pages but not in an imposition. It repeats the "Cover" page in the composed file.

Any help would be appreciated