diff --git a/NumericalData/AMDA/VEX/ephemeris/vex-orb-all.xml b/NumericalData/AMDA/VEX/ephemeris/vex-orb-all.xml
index 0e472b2..a032cf3 100644
--- a/NumericalData/AMDA/VEX/ephemeris/vex-orb-all.xml
+++ b/NumericalData/AMDA/VEX/ephemeris/vex-orb-all.xml
@@ -38,7 +38,7 @@
         <Keyword>artificial satellite</Keyword>
         <Parameter>
             <Name>xyz_vso</Name>
-            <ParameterKey>vex_xyz</ParameterKey>
+            <ParameterKey>vex_xyz_vso</ParameterKey>
             <Description>Venus Express trajectory in VSO coordinates</Description>
             <Ucd>pos.bodyrc;instr.obsty</Ucd>
             <Units>Rv</Units>
@@ -54,18 +54,18 @@
                 <Size>3</Size>
                 <Element>
                     <Name>x</Name>
-                    <Index>0</Index>
-                    <ParameterKey>vex_xyz(0)</ParameterKey>
+                    <Index>1</Index>
+                    <ParameterKey>vex_xyz_vso(0)</ParameterKey>
                 </Element>
                 <Element>
                     <Name>y</Name>
-                    <Index>1</Index>
-                    <ParameterKey>vex_xyz(1)</ParameterKey>
+                    <Index>2</Index>
+                    <ParameterKey>vex_xyz_vso(1)</ParameterKey>
                 </Element>
                 <Element>
                     <Name>z</Name>
-                    <Index>2</Index>
-                    <ParameterKey>vex_xyz(2)</ParameterKey>
+                    <Index>3</Index>
+                    <ParameterKey>vex_xyz_vso(2)</ParameterKey>
                 </Element>
             </Structure>
             <Support>
--
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