valueType Attribute (fileName Element)
Specifies whether the value of the fileName element should be interpreted as a literal value or as an XPath expression that returns a value.
|fileName||Contains the name of the file as a literal string or as an XPath expression.|
<xsd:attribute name="valueType" type="xsf:xdExpressionLiteral" use="optional"></xsd:attribute>
Note This item is not supported when the Disable Service Pack features option on the Advanced tab of the Options dialog box in InfoPath is selected or when Microsoft Office 2003 Editions Service Pack 1 or later is not installed. Any form defined by a form definition file (.xsf) that includes this item cannot be opened in InfoPath when service pack features are disabled or unavailable.
The following is an example of the valueType attribute as it is used in the fileName element:
<xsf:fileName value="my:myFields/my:fileName" valueType="expression"/>