diff -r 1d221eda1e42 -r 26e8b99bc2c3 plcopen/structures.py
--- a/plcopen/structures.py	Wed Sep 04 00:06:44 2013 +0200
+++ b/plcopen/structures.py	Mon Sep 09 00:48:34 2013 +0200
@@ -42,7 +42,7 @@
         return mylist
 
 def generate_block(generator, block, block_infos, body, link, order=False, to_inout=False):
-    body_type = body.getcontent()["name"]
+    body_type = body.getcontent().getLocalTag()
     name = block.getinstanceName()
     type = block.gettypeName()
     executionOrderId = block.getexecutionOrderId()
@@ -158,7 +158,7 @@
             generator.Program += JoinList([(", ", ())], vars)
             generator.Program += [(");\n", ())]
     
-    if link:
+    if link is not None:
         connectionPoint = link.getposition()[-1]
         output_parameter = link.getformalParameter()
     else:
@@ -177,7 +177,7 @@
     else:
         for i, variable in enumerate(output_variables):
             blockPointx, blockPointy = variable.connectionPointOut.getrelPositionXY()
-            if (not connectionPoint or 
+            if (connectionPoint is None or 
                 block.getx() + blockPointx == connectionPoint.getx() and 
                 block.gety() + blockPointy == connectionPoint.gety()):
                 output_variable = variable