Loosing order params set by SCHEDULER_RETURN_VALUES when order starts after set back first error

Order params set by SCHEDULER_RETURN_VALUES are no more available after first set back.

<?xml version="1.0" encoding="ISO-8859-1"?>

<job order="yes"
name="exercise10a">
<script language="shell">
<![CDATA[
echo value of my_param: %SCHEDULER_PARAM_MY_PARAM%
echo other_param=999 >> %SCHEDULER_RETURN_VALUES%
]]>
</script>
<run_time/>
</job>

<?xml version="1.0" encoding="ISO-8859-1"?>

<job order="yes"
stop_on_error="no"
name="exercise10b">
<params/>
<script language="shell">
<![CDATA[
echo value of other_param: %SCHEDULER_PARAM_OTHER_PARAM%
exit 5
]]>
</script>
<delay_after_error error_count="1"
delay="10"/>
<delay_after_error error_count="3"
delay="20"/>
<delay_after_error error_count="5"
delay="stop"/>
<delay_order_after_setback setback_count="5"
is_maximum="yes"
delay="0"/>
<run_time/>
</job>