diff --git a/R/setSimulationPath.R b/R/setSimulationPath.R
index 9b5498e5..6c1fdc4a 100644
--- a/R/setSimulationPath.R
+++ b/R/setSimulationPath.R
@@ -679,3 +679,57 @@ setSimulationPath <- function(path, simulation = NULL) {
     return(list(binding = df_groups))
   }
 }
+
+#' @title Convert the Antares number version
+#'
+#' @param antares_version Antares number version.
+#'
+#' @importFrom stringr str_count
+#'
+#' @export
+transform_antares_version <- function(antares_version) {
+  antares_version <- as.character(antares_version)
+  
+  # Handle single numeric version (e.g., "860", "890")
+  if (str_count(antares_version, "\\.") == 0) {
+    to_write <- antares_version
+    to_read <- as.numeric(antares_version)  # Keep it numeric if no decimal
+  } else {
+    # Split major and minor parts
+    antares_version_splitted <- strsplit(antares_version, split = "\\.")[[1]]
+    
+    # Ensure valid version format
+    if (length(antares_version_splitted) != 2 || any(!str_detect(antares_version_splitted, "^\\d+$"))) {
+      stop("Invalid antares_version format")
+    }
+    
+    # Extract major and minor parts as numbers
+    major_version <- as.numeric(antares_version_splitted[1])
+    minor_version_str <- antares_version_splitted[2]  # Keep minor version as string
+    
+    # Check if minor version exceeds 2 digits
+    if (nchar(minor_version_str) > 2) {
+      stop("Minor version exceeds 2 digits limit.")
+    }
+    
+    # Convert minor version to numeric for calculation
+    minor_version <- as.numeric(minor_version_str)
+    
+    # Convert major version starting from 9.0 to 900, 10.0 to 1000, etc.
+    if (major_version >= 9) {
+      major_version_converted <- major_version * 100
+    } else {
+      stop("Major version must be 9 or higher.")
+    }
+    
+    # Create a numeric value for comparison by treating the version as major.minor
+    to_write <- paste(major_version, minor_version_str, sep = ".")
+    to_read <- major_version_converted + minor_version  # Major * 100, add minor
+  }
+  
+  return(list("w" = to_write, "r" = to_read))
+}
+
+
+
+
diff --git a/tests/testthat/test-setSimulationPath.R b/tests/testthat/test-setSimulationPath.R
index ae9bbb09..f8d4d34f 100644
--- a/tests/testthat/test-setSimulationPath.R
+++ b/tests/testthat/test-setSimulationPath.R
@@ -198,7 +198,7 @@ test_that("New meta data for areas with a ST cluster", {
   expect_false(is.null(opts_study_test$areasWithSTClusters))
 })
 
-
+library(stringr)
 # v870----
 test_that("New meta data for group dimension of binding constraints", {
   # read latest version study
@@ -207,3 +207,33 @@ test_that("New meta data for group dimension of binding constraints", {
   
   expect_is(opts_study_test$binding, "data.table")
 })
+
+test_that("valid versions are transformed correctly", {
+  expect_equal(transform_antares_version("9.0")$r, 900)
+  expect_equal(transform_antares_version("9.45")$r, 945)
+  expect_equal(transform_antares_version("10.10")$r, 1010)
+  expect_equal(transform_antares_version("10.45")$r, 1045)
+  expect_equal(transform_antares_version("12.12")$r, 1212)
+})
+
+test_that("invalid minor versions with more than 2 digits raise an error", {
+  expect_error(transform_antares_version("10.113400000"), "Minor version exceeds 2 digits limit.")
+  expect_error(transform_antares_version("9.1234"), "Minor version exceeds 2 digits limit.")
+})
+
+test_that("invalid major versions less than 9 raise an error", {
+  expect_error(transform_antares_version("8.99"), "Major version must be 9 or higher.")
+  expect_error(transform_antares_version("7.10"), "Major version must be 9 or higher.")
+})
+
+test_that("single numeric versions work correctly", {
+  expect_equal(transform_antares_version("860")$r, 860)
+  expect_equal(transform_antares_version("890")$r, 890)
+})
+
+test_that("correct output for to_write field", {
+  expect_equal(transform_antares_version("9.0")$w, "9.0")
+  expect_equal(transform_antares_version("9.45")$w, "9.45")
+  expect_equal(transform_antares_version("10.10")$w, "10.10")
+  expect_equal(transform_antares_version("12.12")$w, "12.12")
+})