# SetDualValue method

Sets the value of a dual variable.

Information note

These changes are not persistent. They only last the duration of the engine session.

## Parameters

| Name | Description | Mandatory | Type |
| --- | --- | --- | --- |
| qText | String representation of a dual value. Set this parameter to "", if the string representation is to be Null. | Yes | String |
| qNum | Numeric representation of a dual value. | Yes | Number (double) |