diff --git a/DESCRIPTION b/DESCRIPTION
index 0af67793dd44e3a957adf3deeaf7544f30b96bf1..d3c23ad46650fece144337f729ce1e3b8c8359d0 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: airGR
 Type: Package
 Title: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
-Version: 1.2.12.30
+Version: 1.2.12.31
 Date: 2019-04-01
 Authors@R: c(
   person("Laurent", "Coron", role = c("aut", "trl"), comment = c(ORCID = "0000-0002-1503-6204")),
diff --git a/NEWS.rmd b/NEWS.rmd
index ce2c00437fdc720a8f5ca686aedc964fb09c0ada..33511fbd9ad3e30d4575c127efc8900e3ba7d2d4 100644
--- a/NEWS.rmd
+++ b/NEWS.rmd
@@ -13,7 +13,7 @@ output:
 
 
 
-### 1.2.12.30 Release Notes (2019-04-01) 
+### 1.2.12.31 Release Notes (2019-04-01) 
 
 
 
diff --git a/vignettes/V04_cemaneige_hysteresis.Rmd b/vignettes/V04_cemaneige_hysteresis.Rmd
index 289c9c9202b3100569824695018f42f1657fdfd6..5cdd867a883d92bea248414c5a2eb4f9973be634 100644
--- a/vignettes/V04_cemaneige_hysteresis.Rmd
+++ b/vignettes/V04_cemaneige_hysteresis.Rmd
@@ -107,8 +107,8 @@ InputsCrit_Cal  <- CreateInputsCrit(FUN_CRIT = rep("ErrorCrit_KGE2", 6),
                                                BasinObs$SCA3[Ind_Cal],
                                                BasinObs$SCA4[Ind_Cal],
                                                BasinObs$SCA5[Ind_Cal]),
-                                    varObs = list("Q", "SCA", "SCA", "SCA", "SCA", "SCA"),
-                                    weights = list(0.75, 0.05, 0.05, 0.05, 0.05, 0.05))
+                                    VarObs = list("Q", "SCA", "SCA", "SCA", "SCA", "SCA"),
+                                    Weights = list(0.75, 0.05, 0.05, 0.05, 0.05, 0.05))
 
 InputsCrit_Val  <- CreateInputsCrit(FUN_CRIT = rep("ErrorCrit_KGE2", 6),
                                     InputsModel = InputsModel, RunOptions = RunOptions_Val,
@@ -118,8 +118,8 @@ InputsCrit_Val  <- CreateInputsCrit(FUN_CRIT = rep("ErrorCrit_KGE2", 6),
                                                BasinObs$SCA3[Ind_Val],
                                                BasinObs$SCA4[Ind_Val],
                                                BasinObs$SCA5[Ind_Val]),
-                                    varObs = list("Q", "SCA", "SCA", "SCA", "SCA", "SCA"),
-                                    weights = list(0.75, 0.05, 0.05, 0.05, 0.05, 0.05))
+                                    VarObs = list("Q", "SCA", "SCA", "SCA", "SCA", "SCA"),
+                                    Weights = list(0.75, 0.05, 0.05, 0.05, 0.05, 0.05))
 ``` 
 
 We can now calibrate the model.
@@ -191,7 +191,7 @@ RunOptions_Val_NoHyst <- CreateRunOptions(FUN_MOD = RunModel_CemaNeigeGR4J,
 InputsCrit_Cal_NoHyst <- CreateInputsCrit(FUN_CRIT = ErrorCrit_KGE2,
                                           InputsModel = InputsModel,
                                           RunOptions = RunOptions_Cal_NoHyst,
-                                          Obs = BasinObs$Qmm[Ind_Cal], varObs = "Q")
+                                          Obs = BasinObs$Qmm[Ind_Cal], VarObs = "Q")
 
 ## preparation of CalibOptions object
 CalibOptions_NoHyst <- CreateCalibOptions(FUN_MOD = RunModel_CemaNeigeGR4J,