2018.1

Watch.Log("Job Info 9's value is: " + s,4);
}
Python
In Python, the raise statement is similar to JavaScript and will stop processing unless an
except statement is used. See the python documentation.
s = Watch.GetJobInfo(9)
if not s:
raise NameError('Value cannot be empty')
else:
# Do something with Job Info 9!
Watch.Log("Job Info 9's value is: " + s,5)
Perl
In PERL, die() raises an exception and triggers the On Error tab, unless the unless command
is used. See the perl documentation.
$s = $Watch->GetJobInfo(9);
if (s = "") {
die "Value cannot be empty";
} else {
# Do something with Job Info 9!
$Watch->Log("Job Info 9's value is: " . $s,4);
}
Special workflow types
PReS Workflow supports multiple input and output types, in so many different combinations
that it would be hard to give example processes for each possibility. However, some types of
processes like PDF and HTTP processes, and processes related to another product, are
important enough to pay some attention to them.
This chapter will describe each of these special workflow types and give at least one example
of an implementation that uses them.
HTTP Server workflow
An HTTP workflow receives requests from a client via a GET or POST request, sometimes only
with information, sometimes with attached files. An HTTP workflow is basically an XML
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