//Name 	 List_custom_fields_with_values
//Description 	List all custom fields with values for the current task
//Type 	Task / Custom Field Value - String

String s = "";
ArrayList udfs = task.getUDFValuesList();
for(Iterator it = udfs.iterator(); it.hasNext();) {
    SecuredUDFValueBean udf = (SecuredUDFValueBean)it.next();
    s += udf.getCaption() + ":";
    Object value = udf.getValue(task);
    s +=  ((value!=null) ? value : "null") + "|";
}
return s;