# ChildReferenceSelector

An element in the child document that contains a value to use as the document reference. The value you extract must be unique for each child document, because it is used as part of the `DREREFERENCE` field in the child document.

Specify the element using a CSS2 selector, relative to the element identified by ChildDocumentSelector.

If you do not set this parameter, or the element specified by the selector cannot be found, CFS uses a GUID instead.

This parameter cannot be used with the `wkoop_html_processing` Lua function.

Type: | String
Default: |
Required: | No
Configuration Section: | Any section that you have defined for WkoopHtmlExtraction settings
Example: | `ChildReferenceSelector=h1`
See Also: | ChildMetadataFieldName ChildMetadataSelector

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