Jenkins node attribute access returns boolean instead of value

I'm trying to parse XML in Jenkins pipeline using XmlSlurper.

<?xml version="1.0" encoding="UTF-8"?>
<testsuites>
    <testsuite>
        <properties>
            <property name="outcome" value="Failed"/>
            ...
            <property name="orgWideCoverage" value="73%"/>
        </properties>
        ...

I've tried using direct and map notation and both returns same results.

def testsuites = new XmlSlurper().parseText(testResult)
def properties = testsuites.'**'.find { node ->
    node.name() == 'properties'
}

String outcome = properties.'*'.find { node -> 
    node.name() == 'property' && node['@name'] == 'outcome'
}['@value']
printf("Outcome: %s ", outcome)
String orgWideCoverage = properties.'*'.find { node -> 
    node.name() == 'property' && node['@name'] == 'orgWideCoverage'
}['@value']
printf("Coverage: %s ", orgWideCoverage)

I expect the first case returned value to be Failure and get true instead.

For the second case should be 73% and is false