Error in Simple transformation

Question

Hi Guys,
I am very new to Simple transformation,there is an error in my ST,but I have no idea how to fix it,Please take a look at my simple transformation file.Thanks.
I want to deseralize the XML file to ABAp Structure
my xml file is like:
<Content>
    <BookEntity  name="A">
        <Id>01</id>
        <Title>My Book A</Title>
    </BookEntity>
    <BookEntity  name="B">
        <Id>02</id>
        <Title>My Book B</Title>
        <Author>Jamy</Author>
    </BookEntity>
    <BookEntity  name="C">
        <Id>03</id>
        <Author>L</Author>
        <Year>2007</Year>
        <Group>C</Group>
    </BookEntity>
</Content>
my structure likes:
DATA: BEGIN OF content,
        BEGIN OF bookentity,
          name    TYPE string,
          id      TYPE string,
          title   TYPE string,
          author             TYPE string,
          year       TYPE string,
          group    TYPE string,
        END OF contextentity,
      END OF content.
<?sap.transform simple?>
<tt:transform xmlns:tt="http://www.sap.com/transformation-templates">
<tt:root name="ROOT" />
<tt:template>
  <Content>
      <tt:loop ref=".ROOT" name="content" >
        <BookEntity tt:ref="bookentity">
            <tt:attribute name="name" value-ref="name" />
               <tt:apply name="SUB">
              <b>   <tt:with-parameter name="NAME" ref="name"/></b>  <--Error here
               </tt:apply>
        </ContextEntity>
      </tt:loop>
     </Content>
  </tt:template>
<tt:template name="SUB">
       <tt:context>
            <tt:parameter name="NAME"/>
       </tt:context>
            <tt:switch-var>
            <tt:cond-var check="NAME='A'">
                <Id>
                  <tt:value ref="id"/>
                </Id>
                <Title>
                  <tt:value ref="title"/>
                </Title>
            </tt:cond-var>
            <tt:cond-var check="NAME='B'">             
                <Id>
                  <tt:value ref="id"/>
                </Id>
                <Title>
                  <tt:value ref="title"/>
                </Title>
                <Author>
       <tt:value ref="author"/>
                 </Author>
            </tt:cond-var>
            <tt:cond-var check="NAME='C'">            
                <Id>
                  <tt:value ref="id"/>
                </Id>
                <Author>
                  <tt:value ref="author"/>
                </Author>
                <Year>
                  <tt:value ref="year"/>
                </Year>
                <Group>
                  <tt:value ref="group"/>
                </Group>
            </tt:cond-var>
            </tt:switch-var>
</tt:template>
</tt:transform>

Answer 1

Check the flag "use SAP XML toolkit" for the operation mapping and try, if that works then.
Check the flag for all XSLT and Java mappings which is migrated from PI 7.0