formatting workitem attribute value

Hi -

we use RTC 2.0.0.2 ifix4 server and eclipse client.

We have one custom attribute called "Grade". When user comes out of attribute..it should format with % symbol at the end of value. But below things i did is not working . help me out to fix the issue.

the process configuration source looks like below
<customAttributes category="com.ibm.team.workitem.workItemType.task">
<customAttribute id="grade" name="Grade" type="smallString"/>
</customAttributes>

<attributeDefinitions>
<attributeDefinition id="grade" name="Grade" type="smallString">
<dependsOn id="grade"/>
<valueProvider providerId="gradeValue"/>
</attributeDefinition>
</attributeDefinitions>


<configuration-data xmlns="http://com.ibm.team.workitem/providers" id="com.ibm.team.workitem.configuration.providers">
<valueProviders>
<valueProvider id="gradeValue" providerId="com.ibm.team.workitem.shared.common.internal.valueProviders.ScriptAttributeValueProvider" name="Formatting Percentage">
<script class="com.example.common.FormatPercentage"/>
<myGrade id="grade"/>
</valueProvider>
</valueProviders>
</configuration-data>


and the dojo script is written as below and added to links tab

dojo.provide("com.example.common.FormatPercentage");

(function() {


dojo.declare("com.example.common.FormatPercentage", null, {

getValue: function(attribute, workItem, configuration) {

var formatted = attribute.getValue();

return formatted + " %" ;
}

});

})();