L2SS-480: fix typo

tangostationcontrol/tangostationcontrol/devices/beam.py

@@ -128,9 +128,9 @@ class Beam(lofar_device):
         # Only the entries within the mask have been updated
         mask = self.recv_proxy.Ant_mask_RW.flatten()
         for rcu in range(96):
-            if mask[tile]:
-                self._hbat_pointing_direction[tile] = pointing_direction[tile]
-                self._hbat_pointing_timestamp[tile] = timestamp
+            if mask[rcu]:
+                self._hbat_pointing_direction[rcu] = pointing_direction[rcu]
+                self._hbat_pointing_timestamp[rcu] = timestamp
 
     # --------
     # Commands