8.8

error, the contents of the variables selected in this window will be available to the rest of your
process, or as long as they are not overwritten.
Common Errors
Though some error messages are specific to a task in particular, others may apply to any and
all tasks because they are related more to the system than to PReS itself. Some examples
would be W3813, W3830, W3991, W4005. These correspond to issues such as not having any
space to write files, permission errors on folders or files, etc.
Comments Tab
The Comments tab is common to all tasks. It contains a text area (Task comments)that lets
you write comments about the task. These comments are saved when the dialog is closed with
the OKbutton, and are displayed in the Task Comments Pane.
Check the option Use as step description to display the text next to the icon of the plugin in
the Process area.
Mathematical Operations
The Mathematical Operations action task resolves a mathematical expression and stores the
result in an existing job information or variable.
Note
When adding this task to your process, you will be asked if you want to add the task as an
Action or a Condition. This task should only be used as an Action. If used as a condition,
it will always return False.
The task does not modify the job file in any way, its only output is the change in the specified
variable where the result is stored.
Technical
The expression itself must be written in a format understood by the VBSCript scripting
language. For more information, please see Mathematical Functions in VBSCript and
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