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AVEVA™ Work Tasks

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Update Parent Variables Activity

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  • Last UpdatedJun 21, 2024
  • 4 minute read

Activity description

In AVEVA Work Tasks, a parent workflow variable can be updated from a child workflow provided both child and parent workflow belong to the same repository. This can be achieved by using Update Parent variables activity.

Activity Properties

The Update Parent Variables activity has to be configured by specifying appropriate values for the different properties in the Activity Properties area. The Activity Properties can be accessed by clicking on the Activity Properties tool in the Tool Bar or by selecting the appropriate option from the right-click menu for the Update Parent Variables activity. The Activity Properties are organized under the following groups of related properties. The properties under each group are described in this topic.

Name & Description

Use these properties to specify the name and description for the activity.

Name - This property can be used to specify a name for the activity.

Property Type: Optional (This property needs to be set only if necessary.)

Description - This property specifies a brief description to be displayed for the activity.

Property Type: Optional (This property needs to be set only if necessary.)

Configuration

Use these properties to configure the functionality of the activity.

Parent Workflow Application Name - This property specifies the name of the application to which the parent workflow belongs. You can specify the application name directly here or click on the icon to open the Expression Builder and build an expression for the application name.

The parent workflow should belong to the same repository of the child workflow. This property of a child workflow is exposed for backward compatibility.

Property Type: Mandatory (This property must be set if the activity is to be executed.)

Parent Workflow Name - This property specifies the name of the parent workflow. You can specify the workflow name directly here or click on the icon to open the Expression Builder and build an expression for the workflow name.

The parent workflow should belong to the same repository of the child workflow.

Property Type: Mandatory (This property must be set if the activity is to be executed.)

List Parent Variables - This property specifies the parent workflow variables to be updated. Click on the edit icon to open the

'List Parent Variables' property window.

Property Type: Mandatory (This property must be set if the activity is to be executed.)

Set the List Parent Variables property

To update the value of variable:

  1. Click the edit button of the List Parent Variables property. The Update Parent Variables window appears. Specify the parent workflow variables in this window.

  2. Select the check box of the respective parent variable.

  3. Choose the option using which the parent variable to be updated. The parent variable values can be updated using the Value, Variable, Content, or XML Variable of the child workflow.

  4. Depending on the choice, select the respective options or node, and then click Update to save.

    Note: The value can also be hardcoded using the Value option as shown in the following image.

  5. After selecting and assigning values to the variables, click Update to save.

To set the value of XML Variable

  1. Select the check box of the respective parent variable.

  2. Clicking the icon on the left hand side of the check box opens the window to specify the node to be updated of the respective parent XMLVariable.

  3. Select the node to be updated from the tree view.

  4. Choose the option using which the parent XML variable node to be updated. The parent XML variable node value can be updated from the variable, content or XML variable of the child workflow.

  5. Depending on the choice select the respective option/node from the RHS.

    Note: The value can also be hardcoded using the SetValue option as shown in the following figure.

  6. You can specify multiple nodes for updating by using the Add Row option.

  7. In order to remove any node that is set from updating, select the respective entry by selecting the check box in the left hand side and click Remove Selected.

    See Update Parent Variables - List Parent Variables for a detailed description of the List Parent Variables property window.

    Looping Behavior

    The property in the Looping Behavior group has been described below. You can use this property to specify the looping behavior of the activity.

    • Loop through this action if output is - This property is used to specify the condition for looping the activity by selecting an activity output from the drop down.

    Property Type: Optional (This property needs to be set only if necessary.)

    Activity outputs: The Update Parent Variables Activity returns the output value set in the Set Workflow Output property.

    Exception Behavior

    Each activity has the Raise Error on Unhandled Linked Output property on click of which, it shows all the default configured mapped error outputs in red with their check boxes selected.

    See Mapped Error Outputs for more details.

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