#12 patch

issue_12.diff

--- pyx12/x12n_document.py
+++ patch/x12n_document.py
@@ -105,6 +105,8 @@
     #erx = errh_xml.err_handler(basedir=basedir)
 
     valid = True
+
+    cur_map = None
     for seg in src:
         #find node
         orig_node = node
@@ -113,6 +115,14 @@
             node = control_map.getnodebypath('/ISA_LOOP/ISA')
         elif seg.get_seg_id() == 'GS':
             node = control_map.getnodebypath('/ISA_LOOP/GS_LOOP/GS')
+        elif seg.get_seg_id() == 'ST' and cur_map is not None:
+            node = cur_map.getnodebypath('/ISA_LOOP/GS_LOOP/ST_LOOP/ST')
+            try:
+                (node, pop_loops, push_loops) = walker.walk(node, seg, errh,
+                                                        src.get_seg_count(), src.get_cur_line(), src.get_ls_id())
+            except pyx12.errors.EngineError:
+                logger.error('Source file line %i' % (src.get_cur_line()))
+                raise
         else:
             try:
                 (node, pop_loops, push_loops) = walker.walk(node, seg, errh,