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Drive Constant Value

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Drive Constant Value

The Drive Constant Value task will drive a value into a Constant in the Specification.


Property NameDescription
Constant NameThe name of the Constant to drive (including the DWConstant prefix).
Constant ValueThe value to drive into the Constant.
TitleChanges the Title (not the name) of the task.


When this task is added the properties are static by default.
See How To: Change A Static Property To A Dynamic Property to enable rules to be built on these properties.

Property NameExample ruleExample resultMeaning
Constant NameDWConstantMyConstantDWConstantMyConstantThe name of the Constant to which you want to drive the new Value into.
Constant ValueIF(MyControlReturn = TRUE, ValueA, ValueB)ValueAValueA will be driven into the Constant if the control MyControl returns a TRUE value. Otherwise ValueB will be driven into the Constant

The Drive Constant Value task is used to dynamically update values that Constants have. This is an actionable change, therefore you can base events on the changing of the Constant so that they happen at a specific time. For example, upon clicking a macro that runs the Drive Constant Value task you can trigger other elements of UI to be displayed.

Using the Task in a Specification Macro

This task has different types of Outputs. For more information about Outputs see Specification Macros Task Node.

Outputs are only available within Specification Macros. Currently Outputs are not available for Specification Flow.

Status Outputs

This task supports Status Outputs. These can be used to perform different actions depending on what the status outcome of the task is. For more information see Status Outputs in the Task Node Outputs section of Specification Macros Task Node.

The status output navigation is as follows:


  • Constant value driven succesfully.

Success with Warnings

  • N/A


  • Constant not found.

DriveWorks Tech Tips Portal

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Frame Control

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Macro Button Selection

Works as a color picker. Select an item and assign it a color by using Macro Buttons to drive a value.

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