Prework scripts are commonly used to control process data or task state before it's assigned to the users.

Prework script defined area is reached from a related task. When you click on the "Prework script" button on the task, prework script page will open.

Example:

In prework script following objects are available:

$WorkItem
Current workitem instance.

$Xml
Xml data navigator for data model.

$Instance
Current workflow instance.

$Initiator
Initiator of workflow instance.

$TestMode
A boolean value that specifies the current workflow instance is in test mode.

$Priority
A number value between 0 to 5 that specifies the priority of workflow instance.

$Culture
A string value that specifies the initiated culture of workflow instance. (Example: "en" or "de" or "tr")

$Localization
Translation dictionary that provides localized texts.

$Database
Provides methods to query relational database.

$Membership
Provides methods to access organization database.

$Calendar
Provides methods for time based calculations and working hours calendar.

$XmlRepository
Provides methods to query non-relational database.

$Domain
Allows to access domain preferences.

$Services
Allows to access defined web services.

$Messages
Allows to send email messages.

$Crypto
Performs cryptographic and digital signature operations.

$Delegation
Allows to access user delegation library.

$Files
Allows to access file repository.

$Documents
Allows to access document repository. 

Common operations

Auto Process Task

Automatically processes current work item, without assigning it to the users, and skips to the next step of a workflow.

Assign action
$WorkItem.SelectedAction = 'Approve';

Dynamic Deadline Date

Sets deadline date by user entered data.

Assign action
$WorkItem.DeadlineDate = $Xml.EvaluateDateTime('PaymentDate');
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