diff --git a/PARAM_DEF/ulys_lat_hee.xml b/PARAM_DEF/ulys_lat_hee.xml
new file mode 100644
index 0000000..452d37d
--- /dev/null
+++ b/PARAM_DEF/ulys_lat_hee.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<param xml:id="ulys_lat_hee">
+  <get>
+        <vi name="ulys:orb:all">
+         <baseParam name="HEE"/>
+        </vi>
+  </get>
+  <process description="LAT HEE">atan($ulys_orb_all_HEE[2]/sqrt(pow($ulys_orb_all_HEE[1],2) + pow($ulys_orb_all_HEE[0],2)))*RAD2DEG</process>
+  <output/>
+</param>
diff --git a/PARAM_DEF/ulys_lon_hee.xml b/PARAM_DEF/ulys_lon_hee.xml
new file mode 100644
index 0000000..b4ef858
--- /dev/null
+++ b/PARAM_DEF/ulys_lon_hee.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<param xml:id="ulys_lon_hee">
+  <get>
+        <vi name="ulys:orb:all">
+         <baseParam name="HEE"/>
+        </vi>
+  </get>
+  <process description="LON HEE">atan2($ulys_orb_all_HEE[1],$ulys_orb_all_HEE[0])*RAD2DEG</process>
+  <output/>
+</param>
diff --git a/PARAM_DEF/xyz_ulys_hee.xml b/PARAM_DEF/xyz_ulys_hee.xml
index d22b591..99fcada 100644
--- a/PARAM_DEF/xyz_ulys_hee.xml
+++ b/PARAM_DEF/xyz_ulys_hee.xml
@@ -1,2 +1,10 @@
 <?xml version="1.0"?>
-<param xml:id="xyz_ulys_hee"><!--<TemporaryFillValue>NaN</TemporaryFillValue>--><get><vi name="ulys:orb:all"><baseParam name="HEE"/></vi></get><process/><output><!--<plot>TICK_MARKS</plot>--></output></param>
+<param xml:id="xyz_ulys_hee">
+	<!--<TemporaryFillValue>NaN</TemporaryFillValue>-->
+	<get>
+		<vi name="ulys:orb:all">
+			<baseParam name="HEE"/>
+</vi>
+</get>
+<process/>
+<output><!--<plot>TICK_MARKS</plot>--></output></param>
--
libgit2 0.21.2