I've become more acquainted with the various value providers in my RTC 3.0 beta (RC0).
https://jazz.net/wiki/bin/view/Main/AttributeValueProviders

I've done a simple default provider, managed to get a sample value SET provider for a couple of custom enumerations (via the Process Config UI), and have a sample simple-type calculated value custom provider in javaScript (with the "dojo" structure).

I have a couple of questions.

First, I noticed that in the samples in the doc regarding the calculated value (valueProvider - javaScript), the provider configuration included custom configuration properties. Specifically, in the Risk Exposure sample, there are the impactAttribute and probabilityAttribute properties.
I'm confused on the intended use of these. When I try to define these in my own sample, I cannot seem to properly reference them via configuration.getChild in my javaScript. Why is that? What exactly are the configuration methods supposed to return? It isnt clear to me.
I set up my dependsOn and custom properties to custom attributes. I am seeing an "object", or undefined or null references. So I have to hard-code a reference to the ID of a custom attribute in my basic-type (string) calculated value javaScript. That gets me by for basic string types.

My sample provider:

			        <valueProvider>

			            <script>

			            <sourceReleaseAttr>

			            <affectedSysLvlAttr>

			        </valueProvider>



...



			        <attributeDefinition>

			            <valueProvider>

			            <dependsOn>

			        </attributeDefinition>



...



dojo.provide("com.ibm.sport.rtc.common.AparSystemLevelCalculator");



(function() {



   // Cant seem to be able to define this in the provider definition?

   var releaseAttrId = "com.ibm.sport.rtc.workItem.attribute.apar.release";



dojo.declare("com.ibm.sport.rtc.common.AparSystemLevelCalculator", null, {



   getValue: function(attribute, workItem, configuration) {

      

      // Obtain source Release attribute ID

      // var sourceReleaseAttr = configuration.getChild("sourceReleaseAttr");

      // var sourceReleaseAttrId = configuration.getChild("sourceReleaseAttr").id;

      // var sourceReleaseAttrStr = configuration.getString("sourceReleaseAttr");

      // Obtain the workitem value for the attribute

      // var releaseValue = workItem.getValue(sourceReleaseAttr);

      // var releaseAttrId = "com.ibm.sport.rtc.workItem.attribute.apar.release";

      var releaseValue = workItem.getValue(releaseAttrId);

      // Obtain resulting System Level attribute ID

      // var sysLvlAttr = configuration.getChild("affectedSysLvlAttr");

      // var sysLvlAttrId = configuration.getChild("affectedSysLvlAttr").id;

      // var sysLvlAttrStr = configuration.getString("affectedSysLvlAttr");

      // Obtain the workitem value for the attribute

      var sysLvlValue = workItem.getValue(attribute);

      var returnSysLvlValue = sysLvlValue;

      returnSysLvlValue = releaseValue;

      

       return returnSysLvlValue + "";

   },

   

   __sentinel: null

});



})();

==========

This brings me to my 2nd question.
How can I use the calculated value custom provider for custom enumeration attributes?
I know there is the ValueSetProvider, which can filter a set of enumeration choices. However, that does not automatically "select" a choice. I need to keep all choices possible, but select 1 of them based on a selection in another enumeration.
Again, I have been attempting to define custom Provider config properties to reference the enumeration attributes, but the configuration.getChild or getString wont provide anything I can use within the custom provider javaScript. In this case, I think I even tried hard-coding the reference IDs, and still could not reference these attributes or changed values.

Non-working sample with what I've tried so far -

			        <valueProvider>

			            <script>

			            <sourceCodeAttr>

			        </valueProvider>



...



			        <attributeDefinition>

			            <valueProvider>

			            <dependsOn>

			        </attributeDefinition>





...



dojo.provide("com.ibm.sport.rtc.common.AparSymptomKWCalculator");



(function() {



   // Cant seem to be able to define this in the provider definition?

   var sourceSymptomCodeAttr = "com.ibm.sport.rtc.workItem.enumeration.apar.externalSymptomCode";



   // Define Symptom Code -- KW mapping array

   var symptomKWs = {

   "com.ibm.sport.rtc.workItem.enumeration.apar.externalSymptomCode.literal.l1": 

   "com.ibm.sport.rtc.workItem.enumeration.apar.symptomKeyword.literal.l2",

... etc ...   

   } 



dojo.declare("com.ibm.sport.rtc.common.AparSymptomKWCalculator", null, {



   getValue: function(attribute, workItem, configuration) {

      

      // Obtain source Symptom Code attribute ID

      // var sourceSymptomCodeAttr = configuration.getChild("sourceCodeAttr").id;

      var sourceSymptomCodeAttrObj = configuration.getChild("sourceCodeAttr");

      var sourceSymptomCodeAttrId = configuration.getChild("sourceCodeAttr").id;

      var sourceSymptomCodeAttrStr = configuration.getString("sourceCodeAttr");

      // Obtain the workitem value for the attribute

      var symptomCodeValue = workItem.getValue(sourceSymptomCodeAttr);

      // Obtain the matching Symptom KW

      var symptomKW = symptomKWs[symptomCodeValue];

      

      return "SCV=" + symptomCodeValue + "" +

             " .. scOBJ=" + sourceSymptomCodeAttrObj +

             " .. scStr=" + sourceSymptomCodeAttrStr +

             " .. scId=" + sourceSymptomCodeAttrId +

             "";

      // return symptomKW + ""; 

   },

   

   __sentinel: null

});



})();