diff --git a/libertem_asi_tpx3/examples/live_server.py b/libertem_asi_tpx3/examples/live_server.py
index 0894ef56..97878571 100644
--- a/libertem_asi_tpx3/examples/live_server.py
+++ b/libertem_asi_tpx3/examples/live_server.py
@@ -17,6 +17,8 @@
 from libertem.udf.sum import SumUDF
 from libertem.udf.sumsigudf import SumSigUDF
 from libertem.udf.masks import ApplyMasksUDF
+from libertem.udf.com import COMParams
+from libertem_icom.udf.icom import ICOMUDF
 from libertem.executor.pipelined import PipelinedExecutor
 from libertem_live.api import LiveContext
 from libertem_live.udf.monitor import (
@@ -126,9 +128,12 @@ def _ring():
                 radius_inner=ri)
 
         mask_udf = SingleMaskUDF(mask_factories=[_ring])
+        params = COMParams(cy=cy, cx=cx, r=ro, ri=ri)
+        icom_udf = ICOMUDF(params)
         return OrderedDict({
             # "brightfield": SumSigUDF(),
             "annular": mask_udf,
+            "icom": icom_udf,
             # "sum": SumUDF(),
             # "monitor": SignalMonitorUDF(),
             "monitor_partition": PartitionMonitorUDF(),
@@ -186,6 +191,9 @@ async def make_deltas(self, partial_results: UDFResults, previous_results: typin
             udf_name = udf_names[idx]
             for channel_name in partial_results.buffers[idx].keys():
                 data = partial_results.buffers[idx][channel_name].data
+                # FIXME implement n-dimnsional result buffers
+                if len(data.shape) != 2:
+                    continue
                 if previous_results is None:
                     data_previous = np.zeros_like(data)
                 else:
@@ -335,7 +343,7 @@ async def acquisition_loop(self):
             print(f"acquisition done with id={acq_id}; took {t1-t0:.3f}s")
 
     async def serve(self):
-        async with websockets.serve(self, "localhost", 8444):
+        async with websockets.serve(self, "0.0.0.0", 8444):
             try:
                 await self.acquisition_loop()
             finally: