Dynamically count the field

Question

I have a scenario where the target field of one idoc segment should get populated ie. field should count how many other different segments are generated in the target.for example
segment  A comes to 2 times then say field of segment C should be 2 in the target

Answer 1

You can use the following UDF's for increment and initialisation of the counter
Increment the Global Variable Counter
public String incrementCounter(String a,Container container){
   //write your code here
if(a.equals(" "))
Object o = container.getGlobalContainer().getParameter("CNTR");
Integer ii;
if( o == null ) ii = new Integer(0);
else ii = (Integer)o;
ii = new Integer( ii.intValue() + 1);
container.getGlobalContainer().setParameter("CNTR", ii);
String temp = ii.toString();
return temp;
else return " ";
<b>Intialise the Counter</b>
Object o = container.getGlobalContainer().getParameter("CNTR");
Integer ii = new Integer(0);;
container.getGlobalContainer().setParameter("CNTR", ii);
return "1";