Help in BizTalk 2006 R2 Mapping.

I need help in mapping the following:

Input XML
———

<ISOAdjusterinfo>
      <ISOAdjuster>
        <AdjusterNum>10</AdjusterNum>
        <Agency_Code>Agency10</Agency_Code>
        <COL>10</COL>
        <Coverage>10</Coverage>
        <GivenName>Paul</GivenName>
        <ID_Ref>IDRef_10</ID_Ref>
        <Other_GivenName>Abc</Other_GivenName>
        <Phone_Num>2484449999</Phone_Num>
        <Surname>GUnter</Surname>
      </ISOAdjuster>
      <ISOAdjuster>
        <AdjusterNum>10</AdjusterNum>
        <Agency_Code>Agency10</Agency_Code>
        <COL>11</COL>
        <Coverage>11</Coverage>
        <GivenName>Paul</GivenName>
        <ID_Ref>IDRef_11</ID_Ref>
        <Other_GivenName>Abc</Other_GivenName>
        <Phone_Num>2484449999</Phone_Num>
        <Surname>Gunter</Surname>
      </ISOAdjuster>
      <ISOAdjuster>
        <AdjusterNum>20</AdjusterNum>
        <Agency_Code>Agency20</Agency_Code>
        <COL>20</COL>
        <Coverage>20</Coverage>
        <GivenName>John</GivenName>
        <ID_Ref>IDRef_20</ID_Ref>
        <Other_GivenName>Xyz</Other_GivenName>
        <Phone_Num>2484448888</Phone_Num>
        <Surname>Jacobs</Surname>
      </ISOAdjuster>
</ISOAdjusterinfo>

Output XML
———-

<AdjusterParty>
      <ItemIdInfo>
 <AgencyId>Agency10</AgencyId>
      </ItemIdInfo>
      <GeneralPartyInfo>
 <PersonName>
   <Surname>>Gunter</Surname>
          <GivenName>Paul</GivenName>
          <Other_GivenName>Abc</Other_GivenName>  
 </PersonName>
 <Communication>
   <PhoneInfo>
     <PhoneNumber>2484449999</PhoneNumber>
   </PhoneInfo>
 </Communication> 
      </GeneralPartyInfo>
      <AdjusterPartyInfo id = “IDRef_10”>
 <Coverage>10</Coverage>
      </AdjusterPartyInfo>
      <AdjusterPartyInfo id = “IDRef_11”>
 <Coverage>11</Coverage>
      </AdjusterPartyInfo>
</AdjusterParty>
<AdjusterParty>
      <ItemIdInfo>
 <AgencyId>Agency20</AgencyId>
      </ItemIdInfo>
      <GeneralPartyInfo>
 <PersonName>
   <Surname>>Jacobs</Surname>
          <GivenName>John</GivenName>
          <Other_GivenName>Xyz</Other_GivenName>  
 </PersonName>
 <Communication>
   <PhoneInfo>
     <PhoneNumber>2484448888</PhoneNumber>
   </PhoneInfo>
 </Communication> 
      </GeneralPartyInfo>
      <AdjusterPartyInfo id = “IDRef_20”>
 <Coverage>20</Coverage>
      </AdjusterPartyInfo>
</AdjusterParty>

The Adjusterparty needs to be populated once for a particular Adjuster number but the coverage needs to be populated to the existing Adjusterparty for that AdjusterNum.

Thanks in advance.