Attribute Element (Nillable Attributes)

The <attribute> element has an optional nillable attribute that specifies whether FME should interpret an empty element as an empty string attribute (when the nillable attribute is false or missing), or a null attribute (when the nillable attribute is true).

<attribute nillable="false">
	<name> <literal expr="my-optional-attribute"/> </name>
	<value> <extract expr="."/> </value>
</attribute>