"[Solved] Retrieve Unix timestamps"

The Retrieve operator does not seem to correctly retrieve stored unix timestamps (as read from a database for example). The timestamps are long values and in the example below valid values upon storage are for example 1348646704669. The value after retrieval is like 2147483647. The last three digits seem to be missing and  corrupt the data. The following reproduces this problem. Does anyone has an idea how to correctly store and retrieve these long values?

<?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="141" width="634">
      <operator activated="true" class="generate_data" compatibility="5.2.008" expanded="true" height="60" name="Generate Data" width="90" x="92" y="51">
        <parameter key="number_examples" value="10"/>
        <parameter key="number_of_attributes" value="1"/>
        <parameter key="attributes_lower_bound" value="1.348646704669E12"/>
        <parameter key="attributes_upper_bound" value="1.348646704689E12"/>
      </operator>
      <operator activated="true" class="real_to_integer" compatibility="5.2.008" expanded="true" height="76" name="Real to Integer" width="90" x="214" y="51">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="att1"/>
      </operator>
      <operator activated="true" breakpoints="after" class="store" compatibility="5.2.008" expanded="true" height="60" name="Store" width="90" x="354" y="52">
        <parameter key="repository_entry" value="//LocalRepository/timestamps"/>
      </operator>
      <operator activated="true" class="retrieve" compatibility="5.2.008" expanded="true" height="60" name="Retrieve" width="90" x="532" y="44">
        <parameter key="repository_entry" value="//LocalRepository/timestamps"/>
      </operator>
      <connect from_op="Generate Data" from_port="output" to_op="Real to Integer" to_port="example set input"/>
      <connect from_op="Real to Integer" from_port="example set output" to_op="Store" to_port="input"/>
      <connect from_op="Retrieve" from_port="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>
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