custom-task-outcome-model-new.xml

<type name="alvexcourse:approveTask">
	<!-- Parent changed from bpm:workflowTask to bpm:activitiOutcomeTask -->
	<parent>bpm:activitiOutcomeTask</parent>
	<!-- Custom property with constraint that defines possible outcome options -->
	<properties>
		<property name="alvexcourse:okOutcome">
		<type>d:text</type>
			<default>OK</default>
			<constraints>
				<constraint type="LIST" name="alvexcourse:okOutcomeConstraint">
					<parameter name="allowedValues">
						<list>
							<value>OK</value>
						</list>
					</parameter>
				</constraint>
			</constraints>
		</property>
	</properties>
	<!-- Override bpm:outcomePropertyName with our custom property -->
	<overrides>
		<property name="bpm:outcomePropertyName">
			<default>{http://alvexcore.com/prefix/alvexcourse}okOutcome</default>
		</property>
	</overrides>
</type>