Variable substitution

<?xml version="1.0" encoding="UTF-8"?>
<scenario>
     <name>Variable substitution</name>
     <description>Demostrates variable substitution</description>
     <script>variables_subst</script>
     <driver>auto</driver>
     <onpopulate action="save"/>
     <variables>
         <JOB label="Job Title" value="MANAGER" >
             <item type="select" default="MANAGER">
                <select> 
                   <value key="PRES" description="Pres" />
                   <value key="MANAGER" description="Manager" />
                   <value key="SALESREP" description="Sales represenative" />
                   <value key="CLERK" description="Clerk" />
                   <value key="ANALYST" description="Analyst" />
                   <value key="DESIGNER" description="Designer" />
                   <value key="FIELDREP" description="Field represenative" />
                </select>
             </item>
         </JOB>
         <CONDITION value="job = '{JOB}' and sex = 'M'" />
     </variables>
     <sources>
          <source>
               <name>employee</name>
               <extract>
                    <sql>select * from employee where {CONDITION}</sql>
               </extract>
          </source>
     </sources>
     <destinations>
          <destination>
               <name>employee_vars</name>
               <source>employee</source>
               <metadata>yes</metadata>
          </destination>
     </destinations>
</scenario>