title: Dynamic element specification in CALL TRANSFORMATION
body: <p>I am using call transformation to convert XML to ABAP structure.</p>
  <pre><code>call transformation demo_id_upper_lower &quot;id 
  parameters mode = 'UP' 
  source xml asxml_str 
  result paymentrequest = abap_out. 
  </code></pre>
  <p>This works as expected and the data is mapped to ABAP structure successfully. <code>paymentrequest</code> is the root tag ins this example.</p>
  <p>Is there a way to specify a variable containing the tag name instead of the tag directly in the result?</p>
  <pre><code>data(my_var) = 'paymentrequest'. 
  
  call transformation demo_id_upper_lower &quot;id 
  parameters mode = 'UP' 
  source xml asxml_str 
  result my_var = abap_out.
  </code></pre>
  <p>In this case there's no exception but variable is not resolved to value and I think it reads it literally.</p>
  <p>Note: I have also tried assigning the element name to a field symbol. But that too didn't work.</p>