easy script cannot execute

[IAM David Bantz]

<resolver:Dependency ref="assuranceExplicit" />

...

        if (assurance == null)

                {assurance == new BasicAttribute("assurance");}

        if (assuranceExplicit == null)

                {assurance.getValues().add("a default value");}

        if (assuranceExplicit != null)


{assurance.getValues().add(assuranceExplicit.getValues().get(0));}

        logger.debug("assurance - allowed authN contexts: " +
assurance.getValues());

...

fails to execute with the ScriptedAttributeDefinition ERROR:

ScriptletAttributeDefinition assurance unable to execute script
javax.script.ScriptException:
sun.org.mozilla.javascript.internal.EcmaError: TypeError: Cannot call
method "getValues" of null (<Unknown Source>#11)

assurance is assigned a value whether assuranceExplicit is null or not
null, so I cannot see how assurance can be null.
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