"[Solved] Windowing operator returns just 0"

Good evening,

The following process seems to be correct to me but after windowing, all examples of the label attribute are "0". Please help!!!
If you enable the set role operator it works. So it seems that is something with the combination of windowing operator and the "id" role.


Best regards
Sachs

PS: In my original file I used dates as an id but with the same result.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.2.008">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="5.2.008" expanded="true" name="Process">
    <process expanded="true" height="402" width="835">
      <operator activated="true" class="generate_data" compatibility="5.2.008" expanded="true" height="60" name="Generate Data" width="90" x="45" y="30"/>
      <operator activated="true" class="rename" compatibility="5.2.008" expanded="true" height="76" name="Rename" width="90" x="179" y="30">
        <parameter key="old_name" value="label"/>
        <parameter key="new_name" value="id"/>
        <list key="rename_additional_attributes"/>
      </operator>
      <operator activated="true" class="set_role" compatibility="5.2.008" expanded="true" height="76" name="Set Role" width="90" x="313" y="30">
        <parameter key="name" value="id"/>
        <parameter key="target_role" value="id"/>
        <list key="set_additional_roles"/>
      </operator>
      <operator activated="true" class="set_role" compatibility="5.2.008" expanded="true" height="76" name="Set Role (2)" width="90" x="447" y="30">
        <parameter key="name" value="att3"/>
        <parameter key="target_role" value="label"/>
        <list key="set_additional_roles"/>
      </operator>
      <operator activated="false" class="set_role" compatibility="5.2.008" expanded="true" height="76" name="Set Role (3)" width="90" x="581" y="75">
        <parameter key="name" value="id"/>
        <list key="set_additional_roles"/>
      </operator>
      <operator activated="true" class="series:windowing" compatibility="5.2.001" expanded="true" height="76" name="Windowing" width="90" x="715" y="30">
        <parameter key="window_size" value="1"/>
        <parameter key="create_label" value="true"/>
        <parameter key="label_attribute" value="att3"/>
      </operator>
      <connect from_op="Generate Data" from_port="output" to_op="Rename" to_port="example set input"/>
      <connect from_op="Rename" from_port="example set output" to_op="Set Role" to_port="example set input"/>
      <connect from_op="Set Role" from_port="example set output" to_op="Set Role (2)" to_port="example set input"/>
      <connect from_op="Set Role (2)" from_port="example set output" to_op="Windowing" to_port="example set input"/>
      <connect from_op="Windowing" from_port="example set output" to_port="result 1"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
    </process>
  </operator>
</process>