diff --git a/site_ansto/instrument/sans/config/parameters/parameters.tcl b/site_ansto/instrument/sans/config/parameters/parameters.tcl
index a9f288b1..decf4c1d 100644
--- a/site_ansto/instrument/sans/config/parameters/parameters.tcl
+++ b/site_ansto/instrument/sans/config/parameters/parameters.tcl
@@ -18,10 +18,6 @@ foreach {var lname nxname} {
 ##
 # @brief User privilege text variables
 #
-# TODO SICS-117 Redo as get/set macros like the "kind=command" macros but kind=getset and it is saveable
-# The set parameter will have a domain.  If the param is readonly then the hdb privilege is readonly
-# Pros, GumTree will know the data type of the parameter (text params will have a list of valid values).
-# Cons, There is no "instant" feedback, macros are polled on the hdb tree.
 foreach {var lname nxname priv klass} {
     SApShape     SApShape     shape   user       parameter
     BSShape      BSShape      shape   user       parameter
@@ -29,7 +25,8 @@ foreach {var lname nxname priv klass} {
   ::utility::mkVar $var text $priv $lname true $klass true true
 }
 
-# The velocity selector position is used as the reference for other instrument
+##
+# @brief The velocity selector position is used as the reference for other instrument
 # component positions. For simplicity we set it as the origin x=y=z=0.
 foreach {var lname nxname units klass} {
     VelSelPosXmm   VelSelPosXmm   x   mm @none
@@ -46,7 +43,8 @@ foreach {var lname nxname units klass} {
 
 ::utility::mkVar SampleNum int readonly changer_position true parameter true true
 
-# Parameter SicsVariables
+##
+# @brief Parameter SicsVariables
 foreach {var lname nxname units priv } {
     LambdaA                  LambdaA                  wavelength          nm        user    
     LambdaResFWHM_percent    LambdaResFWHM_percent    wavelength_spread   1         user    
@@ -65,6 +63,9 @@ foreach {var lname nxname units priv } {
     DetPosYOffsetmm          DetPosYOffsetmm          detposyoffset       mm        user    
     BSXmm                    BSXmm                    x                   mm        user    
     BSZmm                    BSZmm                    z                   mm        user    
+    Transmission             Transmission             Transmission        1         user
+    BeamCenterX              BeamCenterX              BeamCenterX         mm        user
+    BeamCenterY              BeamCenterY              BeamCenterY         mm        user
 } {
   ::utility::mkVar $var float $priv $lname true parameter true true
   if {$units != 1} {