diff --git a/NEWS.md b/NEWS.md
index 19398906..3b41e5e8 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,7 +4,9 @@
 
 BUGFIXES :  
 
-* `setSimulationPathAPI()` error message with bad id
+* `setSimulationPathAPI()` :  
+  - returns an API exception if the requested study ID is incorrect 
+  - `simulation` the simulation parameter works with negative values within the limit of the number of simulations
 * correction in `readClusterDesc()` calls to add "opts"
 
 
diff --git a/R/setSimulationPath.R b/R/setSimulationPath.R
index e7971887..5df538e3 100644
--- a/R/setSimulationPath.R
+++ b/R/setSimulationPath.R
@@ -246,8 +246,13 @@ setSimulationPath <- function(path, simulation = NULL) {
 
 .giv_sim <- function(simulation, simNames, path){
   if (is.numeric(simulation)) {
-    if (simulation > 0) sim <- simNames[simulation]
-    else sim <- rev(simNames)[abs(simulation)]
+    if(abs(simulation)>length(simNames))
+      stop(paste0("Parameter 'simulation' is greater than 
+                  the number of simulations (", length(simNames), ")"), call. = FALSE)
+    if (simulation > 0) 
+      sim <- simNames[simulation]
+    else 
+      sim <- rev(simNames)[abs(simulation)]
   } else {
     if (any(simNames == simulation)) sim <- simulation
     else {
diff --git a/R/utils_api.R b/R/utils_api.R
index 75e38dba..921e2715 100644
--- a/R/utils_api.R
+++ b/R/utils_api.R
@@ -47,7 +47,7 @@ read_secure_json <- function(url, token = NULL, timeout = 60, config = list()) {
   outputPath <- file.path(path,  "output")
   if(is.null(simulation) | (!is.null(simulation) && !simulation %in% c(0, "input"))){
     outputContent <- names(read_secure_json(paste0(outputPath, "&depth=4"), ...))
-    simNames <- setdiff(basename(outputContent), "maps")
+    simNames <- setdiff(basename(outputContent), c("maps", "logs"))
   }
   if (length(simNames) == 0) {
     if (length(simulation) > 0 && !simulation %in% c(0, "input")) {
@@ -196,6 +196,7 @@ read_secure_json <- function(url, token = NULL, timeout = 60, config = list()) {
       simDataPath = simDataPath,
       name = as.character(info$name),
       mode = as.character(info$mode),
+      simDate = info$date,
       synthesis = synthesis,
       yearByYear = yearByYear,
       scenarios = scenarios,