Graphical Mapping Problem : Create Segments by conditions

Question

Hi,
i have a problem while mapping an incoming invoice to IDoc Invoic02. I had to create some Segments (E1EDP02) on basis of identifiers in the incoming message. I hope the following example i created will help to understand my exact problem:
EXAMPLE MESSAGE:
<invoice>
<document>
<position>
   <line>
     <posnum> 1 </posnum>
     <IMD>
     <ident> Name </ident>
     <val>   Maxx </val>
     </IMD>
     <IMD>
     <ident> Age </ident>
     <val>   19 </val>
     </IMD>
     <IMD>
     <ident> Gender </ident>
     <val>   Male </val>
     </IMD>
   </line>
</position>
<position>
   <line>
     <posnum> 2 </posnum>
     <IMD>
     <ident> Name </ident>
     <val>   Tina </val>
     </IMD>
     <IMD>
     <ident> Age </ident>
     <val>   28 </val>
     </IMD>
     <IMD>
     <ident> Gender </ident>
     <val>   Female </val>
     </IMD>
   </line>
</position>
</document>
</invoice>
THE RESULT I WANT:
<invoic02>
<E1EDP01>
<SEGMENT> </SEGMENT>
<POSEX> 1 </POSEX>
  <E1EDP02>
       <SEGMENT> </SEGMENT>
     <QUALF> 021 </QUALF>
     <BELNR> 19 </BELNR> // THIS should be the Age
  </E1EDP02>
  <E1EDP19>
  </E1EDP19>
</E1EDP01>
<E1EDP01>
<SEGMENT> </SEGMENT>
  <POSEX> 2 </POSEX>
  <E1EDP02>
     <SEGMENT> </SEGMENT>
     <QUALF> 021 </QUALF>
     <BELNR> 28 </BELNR> // THIS should be the Age
  </E1EDP02>
  <E1EDP19>
  </E1EDP19>
</E1EDP01>
</invoic02>
I tried to different ways to get the above result but i failed
My first try:
ident      -------|--- equalsS ------ createIf ---- E1EDP02
Constant[000] --------- SEGMENT
Constant[Age]--|
ident      -------|--- equalsS ------ ifWithoutElse ---- QUALF
Constant[Age]--|             |          
                       |
                    Constant[021]
ident      -------|--- equalsS ------ ifWithoutElse ---- BELNR
Constant[Age]--|             |          
                       |
                       val
Result:
The E1EDP02 Element will not created reliable. Sometimes it is there sometimes not dunno why ? Any Idea ?
My second try:
IMD -------------- E1EDP02
Constant[000] --------- SEGMENT
ident      -------|--- equalsS ------ ifWithoutElse ---- QUALF
Constant[Age]--|             |          
                       |
                    Constant[021]
ident      -------|--- equalsS ------ ifWithoutElse ---- BELNR
Constant[Age]--|             |          
                       |
                       val
Result:
Now every E1EDP01 Element has two E1EDP02 Elements. One correct one and an empty one with only a segment element. Is there a way to delete this empty elements ?
Any ideas to create a working mapping ?
Thanks

Answer 1

@Liang Ji 
When i do this i have only the first E1EDP01 Element
@Tarang Shah
Which function i had to use for this ?
Thank you