It should be possible to call the method .start in the job object without the optional parameter variable_set

Description
The API method .start that is available in the job object has the option parameter variable_set. When calling the method without the parameter, an error occurs.

Z-JAVA-105  Java exception java.lang.RuntimeException: COM-80020009  Ausnahmefehler aufgetreten. [] [Ivariable_set is not a Com_variable_set (Calling Spooler.Job::start)], method=spooler_process()Z []

Therefore the JITL-Job check_blacklist does not work any more when it is parameterized with the parameter job

Desired behaviour
The parameter variable_set in the method .start for an object job should be optional as documented.

Reproduce
To reproduce the error start this job. The job needs a job named job1 in the live folder.

<job  name="job5">
    <script  language="java:javascript">
        <![CDATA[
function spooler_process(){
    var j = spooler.job("job1");
    j.start();
	return false;
}
        ]]>
    </script>

    <run_time />
</job>

Workaround
When the .start method is used (e.g. in customers scripts) create an empty variable_set and add the parameter to the call

Example:

<job  name="job5">
    <script  language="java:javascript">
        <![CDATA[
function spooler_process(){
    var j = spooler.job("job1");
    var parameters = spooler.create_variable_set();
    j.start(parameters);
	return false;
}
        ]]>
    </script>

    <run_time />
</job>

Workaround for the job check_blacklist

Use a job chain instead of a stand alone job and remove the parameter job. Put the job into the job chain