Invalid types, can only act on data of the same type (Any Type, CDT)

 a!columnChartField(
        label: "Année",
        labelPosition: "JUSTIFIED",
        categories: a!forEach(
          items: local!periodes[local!selectedPeriod].weeks.week,
          expression: "S" & fv!item
        ),
        series: a!forEach(
          items: local!uPerWeekPeriode,
          expression: a!localVariables(
            local!cBrandId: fv!item.cBrandId,
            a!chartSeries(
              label: fv!item.cBrand,
              data: if(
                contains(fv!item.cBrandId, ri!selectedUs),
                fv!item.uPerWeeks,
                {}
              ),
              links: a!forEach(
                items: local!periodes[local!selectedPeriod].weeks,
                expression: a!dynamicLink(
                  saveInto: {
                    a!save(ri!filteredYear,tointeger(fv!item.year)),
                    a!save(ri!filteredWeek,fv!item.week),
                    a!save(ri!filteredStatus,cons!STATUT),
                    a!save(ri!filteredCBrand,local!cBrandId),
                    a!save(ri!displayPList,true)
                  }
                )
              )
            )
          )
        ),
        yAxisMax: local!topAxisUb,
        stacking: "NONE",
        showLegend: true,
        showTooltips: true
      ),

I wanted to filter the chart to display only "selected Us". In othrer words, only contains" selected Us".