CRM 2011 Attribute Lookup: Integrating BizTalk with CRM 2011

Hi Friends,
I have been working on a CRM 2011 Integration using WCF Adapter from BizTalk. Richard Seroter has done a very good job by posting 2 Articles on it which clears most of the basics.
Past few days I have been struggling to get this Lookup thing right. I tried the solution which Richard mentioned but seems he dint test it well...it fails.  I had also posted over msdn forum for help but nothing came up.
http://social.msdn.microsoft.com/Forums/en-US/biztalkgeneral/thread/3b08958a-cd8e-480d-9b35-eccbdfca04f8/#3b08958a-cd8e-480d-9b35-eccbdfca04f8

But this German link helped me a lot. I had to translate it to English but it was worth every penny.
http://www.msdynamics.de/viewtopic.php?f=60&t=12408

So what was the solution?
I had 2 Script functoids as shown in the map below as Richard has in the basic one first Series of CRM Integration.
http://seroter.wordpress.com/2011/02/10/the-good-bad-and-ugly-of-integrating-dynamics-crm-2011-and-biztalk-server-2010/

The C# Script in Functoid1 returns the name of the Key(Attribute Name) which is simple.

The important thing is mapping the value field where we lookup the other Entity which is shown as below

The Script is as below.
<xsl:template name="SetFieldValue"> <xslaram name="param1" /> <value xmlns="http://schemas.datacontract.org/2004/07/System.Collections.Generic" xmlnss="http://www.w3.org/2001/XMLSchema" xmlnssi="http://www.w3.org/2001/XMLSchema-instance" xmlns:a="http://schemas.microsoft.com/xrm/2011/Contracts"> <xsl:attribute name="xsi:type"> <xsl:value-of select="'a:EntityReference'" /> </xsl:attribute> <Id xmlns="http://schemas.microsoft.com/xrm/2011/Contracts" xmlns:ser="http://schemas.microsoft.com/2003/10/Serialization/"> <xsl:attribute name="xsi:type"> <xsl:value-of select="'ser:guid'" /> </xsl:attribute> <xsl:value-of select="$param1" /> </Id> <LogicalName xmlns="http://schemas.microsoft.com/xrm/2011/Contracts"> lucky_loadlist</LogicalName> <Name xmlns="http://schemas.microsoft.com/xrm/2011/Contracts" /> </value> </xsl:template>

This XML works fine against CRM
LogicalName is always the name of the Entity.
<ns0:Create xmlns:ns2="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns:ns0="http://schemas.microsoft.com/xrm/2011/Contracts/Services" xmlns:ns3="http://schemas.microsoft.com/xrm/2011/Metadata" xmlns:ns5="http://schemas.microsoft.com/2003/10/Serialization/" xmlns:ns1="http://schemas.datacontract.org/2004/07/System.Collections.Generic" xmlns:ns4="http://schemas.microsoft.com/xrm/2011/Contracts"> <ns0:entity><ns4:Attributes><ns4:KeyValuePairOfstringanyType> <ns1:key>lucky_accountsbylistid</ns1:key> <value xsi:type="a:EntityReference" xmlns="http://schemas.datacontract.org/2004/07/System.Collections.Generic" xmlnss="http://www.w3.org/2001/XMLSchema" xmlnssi="http://www.w3.org/2001/XMLSchema-instance" xmlns:a="http://schemas.microsoft.com/xrm/2011/Contracts"> <a:Id xsi:type="ser:guid" xmlns:ser="http://schemas.microsoft.com/2003/10/Serialization/"> 4B4B105F-6B82-E111-A667-00155D067401</a:Id><a:LogicalName>lucky_loadlist</a:LogicalName> <a:Name /> </value></ns4:KeyValuePairOfstringanyType> </ns4:Attributes><ns4:LogicalName>lucky_accountbylistvalidationrel</ns4:LogicalName></ns0:entity></ns0:Create>
So if you would like to work with CRM lookup its easy but hardly any resources online and strangely nothing from Microsoft on documentation regarding Integrating CRM 2011 with BizTalk.
I wasted good enough days banging my head to make this lookup work but its all is worth when you see it working finally.
Just mail me if you have any questions regarding Integration CRM 2011 using WCF Adapter in Biztalk.
Finally thanks Richard for post such valuable content regarding Integrating CRM 2011 using WCF BizTalk Adapter.

Hope this post helps you all!