diff --git a/PARAM_DEF/bepi_bls_da.xml b/PARAM_DEF/bepi_bls_da.xml
index a45fc89..2954407 100644
--- a/PARAM_DEF/bepi_bls_da.xml
+++ b/PARAM_DEF/bepi_bls_da.xml
@@ -4,6 +4,6 @@
 	<get>
 		<amdaParam name="bepi_xyz_hee"/>		 
 	</get>
-	<process>RAD2DEG*acos($bepi_xyz_hee[0]/sqrt($bepi_xyz_hee[0]*$bepi_xyz_hee[0]+$bepi_xyz_hee[1]*$bepi_xyz_hee[1]))*Sign($bepi_xyz_hee[1])</process>
+	<process>RAD2DEG*acos($bepi_xyz_hee[0]/sqrt($bepi_xyz_hee[0]*$bepi_xyz_hee[0]+$bepi_xyz_hee[1]*$bepi_xyz_hee[1]))*Sign(-$bepi_xyz_hee[1])</process>
 	<output/>
 </param>
diff --git a/PARAM_DEF/jup_bls_da.xml b/PARAM_DEF/jup_bls_da.xml
index 19bd29c..845596f 100644
--- a/PARAM_DEF/jup_bls_da.xml
+++ b/PARAM_DEF/jup_bls_da.xml
@@ -4,6 +4,6 @@
 	<get>
 		<amdaParam name="xyz_jupiter_hee"/>		 
 	</get>
-	<process>RAD2DEG*acos($xyz_jupiter_hee[0]/sqrt($xyz_jupiter_hee[0]*$xyz_jupiter_hee[0]+$xyz_jupiter_hee[1]*$xyz_jupiter_hee[1]))*Sign($xyz_jupiter_hee[1])</process>
+	<process>RAD2DEG*acos($xyz_jupiter_hee[0]/sqrt($xyz_jupiter_hee[0]*$xyz_jupiter_hee[0]+$xyz_jupiter_hee[1]*$xyz_jupiter_hee[1]))*Sign(-$xyz_jupiter_hee[1])</process>
 	<output/>
 </param>
diff --git a/PARAM_DEF/mars_bls_da.xml b/PARAM_DEF/mars_bls_da.xml
index 499554c..fdf5558 100644
--- a/PARAM_DEF/mars_bls_da.xml
+++ b/PARAM_DEF/mars_bls_da.xml
@@ -4,6 +4,6 @@
 	<get>
 		<amdaParam name="xyz_mars_hee"/>		 
 	</get>
-	<process>RAD2DEG*acos($xyz_mars_hee[0]/sqrt($xyz_mars_hee[0]*$xyz_mars_hee[0]+$xyz_mars_hee[1]*$xyz_mars_hee[1]))*Sign($xyz_mars_hee[1])</process>
+	<process>RAD2DEG*acos($xyz_mars_hee[0]/sqrt($xyz_mars_hee[0]*$xyz_mars_hee[0]+$xyz_mars_hee[1]*$xyz_mars_hee[1]))*Sign(-$xyz_mars_hee[1])</process>
 	<output/>
 </param>
diff --git a/PARAM_DEF/mercury_bls_da.xml b/PARAM_DEF/mercury_bls_da.xml
index 3e11eb7..874bc0a 100644
--- a/PARAM_DEF/mercury_bls_da.xml
+++ b/PARAM_DEF/mercury_bls_da.xml
@@ -4,6 +4,6 @@
 	<get>
 		<amdaParam name="xyz_mercury_hee"/>		 
 	</get>
-	<process>RAD2DEG*acos($xyz_mercury_hee[0]/sqrt($xyz_mercury_hee[0]*$xyz_mercury_hee[0]+$xyz_mercury_hee[1]*$xyz_mercury_hee[1]))*Sign($xyz_mercury_hee[1])</process>
+	<process>RAD2DEG*acos($xyz_mercury_hee[0]/sqrt($xyz_mercury_hee[0]*$xyz_mercury_hee[0]+$xyz_mercury_hee[1]*$xyz_mercury_hee[1]))*Sign(-$xyz_mercury_hee[1])</process>
 	<output/>
 </param>
diff --git a/PARAM_DEF/nep_bls_da.xml b/PARAM_DEF/nep_bls_da.xml
index 3898aab..6f30e26 100644
--- a/PARAM_DEF/nep_bls_da.xml
+++ b/PARAM_DEF/nep_bls_da.xml
@@ -4,6 +4,6 @@
 	<get>
 		<amdaParam name="xyz_neptune_hee"/>		 
 	</get>
-	<process>RAD2DEG*acos($xyz_neptune_hee[0]/sqrt($xyz_neptune_hee[0]*$xyz_neptune_hee[0]+$xyz_neptune_hee[1]*$xyz_neptune_hee[1]))*Sign($xyz_neptune_hee[1])</process>
+	<process>RAD2DEG*acos($xyz_neptune_hee[0]/sqrt($xyz_neptune_hee[0]*$xyz_neptune_hee[0]+$xyz_neptune_hee[1]*$xyz_neptune_hee[1]))*Sign(-$xyz_neptune_hee[1])</process>
 	<output/>
 </param>
diff --git a/PARAM_DEF/ros_bls_da.xml b/PARAM_DEF/ros_bls_da.xml
index 60f99cc..b3696e2 100644
--- a/PARAM_DEF/ros_bls_da.xml
+++ b/PARAM_DEF/ros_bls_da.xml
@@ -4,6 +4,6 @@
 	<get>
 		<amdaParam name="ros_xyz_hee"/>		 
 	</get>
-	<process>RAD2DEG*acos($ros_xyz_hee[0]/sqrt($ros_xyz_hee[0]*$ros_xyz_hee[0]+$ros_xyz_hee[1]*$ros_xyz_hee[1]))*Sign($ros_xyz_hee[1])</process>
+	<process>RAD2DEG*acos($ros_xyz_hee[0]/sqrt($ros_xyz_hee[0]*$ros_xyz_hee[0]+$ros_xyz_hee[1]*$ros_xyz_hee[1]))*Sign(-$ros_xyz_hee[1])</process>
 	<output/>
 </param>
diff --git a/PARAM_DEF/sat_bls_da.xml b/PARAM_DEF/sat_bls_da.xml
index ea24d96..0199f4f 100644
--- a/PARAM_DEF/sat_bls_da.xml
+++ b/PARAM_DEF/sat_bls_da.xml
@@ -4,6 +4,6 @@
 	<get>
 		<amdaParam name="xyz_saturn_hee"/>		 
 	</get>
-	<process>RAD2DEG*acos($xyz_saturn_hee[0]/sqrt($xyz_saturn_hee[0]*$xyz_saturn_hee[0]+$xyz_saturn_hee[1]*$xyz_saturn_hee[1]))*Sign($xyz_saturn_hee[1])</process>
+	<process>RAD2DEG*acos($xyz_saturn_hee[0]/sqrt($xyz_saturn_hee[0]*$xyz_saturn_hee[0]+$xyz_saturn_hee[1]*$xyz_saturn_hee[1]))*Sign(-$xyz_saturn_hee[1])</process>
 	<output/>
 </param>
diff --git a/PARAM_DEF/ura_bls_da.xml b/PARAM_DEF/ura_bls_da.xml
index a395ad1..c2dc189 100644
--- a/PARAM_DEF/ura_bls_da.xml
+++ b/PARAM_DEF/ura_bls_da.xml
@@ -4,6 +4,6 @@
 	<get>
 		<amdaParam name="xyz_uranus_hee"/>		 
 	</get>
-	<process>RAD2DEG*acos($xyz_uranus_hee[0]/sqrt($xyz_uranus_hee[0]*$xyz_uranus_hee[0]+$xyz_uranus_hee[1]*$xyz_uranus_hee[1]))*Sign($xyz_uranus_hee[1])</process>
+	<process>RAD2DEG*acos($xyz_uranus_hee[0]/sqrt($xyz_uranus_hee[0]*$xyz_uranus_hee[0]+$xyz_uranus_hee[1]*$xyz_uranus_hee[1]))*Sign(-$xyz_uranus_hee[1])</process>
 	<output/>
 </param>
diff --git a/PARAM_DEF/venus_bls_da.xml b/PARAM_DEF/venus_bls_da.xml
index 7c5b306..91e0eca 100644
--- a/PARAM_DEF/venus_bls_da.xml
+++ b/PARAM_DEF/venus_bls_da.xml
@@ -4,6 +4,6 @@
 	<get>
 		<amdaParam name="xyz_venus_hee"/>		 
 	</get>
-	<process>RAD2DEG*acos($xyz_venus_hee[0]/sqrt($xyz_venus_hee[0]*$xyz_venus_hee[0]+$xyz_venus_hee[1]*$xyz_venus_hee[1]))*Sign($xyz_venus_hee[1])</process>
+	<process>RAD2DEG*acos($xyz_venus_hee[0]/sqrt($xyz_venus_hee[0]*$xyz_venus_hee[0]+$xyz_venus_hee[1]*$xyz_venus_hee[1]))*Sign(-$xyz_venus_hee[1])</process>
 	<output/>
 </param>
--
libgit2 0.21.2