I'm trying to set conditional displaying of some expression in pivot table. For example, if some values in field Posting Month are selected, then some expressions shouldn't be displayed and also, they are supposed to be replaced with others. Pivot table should always be displayed.
conditional expressions are not supported in Pivot Tables - only in Straight Tables. As a work-around, you can create a number of Pivot Tables, each satisfying certain Condition, and use the same condition as a Show Condition for each object.