# NxFieldProperties

## Properties

| Name | Description | Type |
| --- | --- | --- |
| qOneAndOnlyOne | This parameter is set to true, if the field has one and only one selection (not 0 and not more than 1).<br>If this property is set to true, the field cannot be cleared anymore and no more selections can be performed in that field.<br><br>Information note<br><br>The property *OneAndOnlyOne* can be set to true if one and only value has been selected in the field prior to setting the property. | Boolean |