Allow Undefined Values
- Updated2025-07-30
- 1 minute(s) read
If TRUE, users can enter numeric values not already associated with any entries in the list of items defined for a ring control. Users must enter undefined numeric values in the digital display of the control. If FALSE, users must select from the list of items defined for the control.
This property is similar to the Allow Undefined Values item on the shortcut menu of a ring control and the Allow undefined values at run time checkbox on the Edit Items page of the Ring Control Properties dialog box.
Remarks
The following table lists the characteristics of this property.
| Short Name | AllowUndefVals |
| Data type |  |
| Permissions | Read/Write |
| Available in Run-Time Engine | Yes |
| Available in Real-Time Operating System | Yes |
| Settable when the VI is running | Yes |
| Loads the front panel into memory | Yes |
| Need to authenticate before use | No |
| Loads the block diagram into memory | No |
| Remote access allowed | Yes |