Is a!forEach cannot be written into saveInto?

saveInto:{
                    if(or(isnull(local!searchDeleteUserRole),isnull(local!newUser)),{},
                    a!forEach(
                      items:rule!KONE_Development_CSE_TENDER_Rule(),
                      expression:a!localVariables(
                        local!tender_Id:fv!item.id,
                        local!status_Id:fv!item.statusId,
                        a!forEach(
                          items:rule!KONE_Development_CSE_TENDER_PHASES_Rule(),
                          expression:
                          if(fv!item.user=local!searchDeleteUserRole,
                          if(local!tender_Id=fv!item.tenderId,
                          if(not(or(local!status_Id=4,local!status_Id=3)),
                          {
                            a!save(target:ri!csetenderphases.user,value:local!newUser),
                            a!save(target:ri!csetenderphases.id,value:fv!item.id),
                          }
                          ,{})
                          ,{}),
                          {})
                        )
                      )
                    ),
                    )
                  },

This report " Expression evaluation error [evaluation ID = e8611:77009] : An error occurred while executing a save: Expression evaluation error: You must specify a variable to save into, such as ri!name << fn!sum. Received: List of Variant.". But i do write ri!csetenderphases.user as the value to save. What's wrong?