code: def process(object, options={})
        filtered = super(object, options)
  
        return nil if filtered.nil?
  
        values = filtered.split(';')
  
        values.each_with_index do |value, index|
          if types[index] == 'n'
            if value =~ /\./
              number_value = value.to_f
            else
              number_value = value.to_i
            end
            values[index] = number_value
          elsif types[index] == 'd'
            if value.strip.empty?
              date = Date.strptime('9999-9-9', '%Y-%m-%d')
            else
              begin
                date = Date.strptime(value, date_format)
              rescue
                puts "Error #{value}, #{index}"
              end
            end
            values[index] = date
          end
        end 
  
        values
      end
docs: Processes the filter and returns the filtered columns