diff --git a/application/F3DOptionsTools.cxx b/application/F3DOptionsTools.cxx
index a9ae036029..c14c5a2965 100644
--- a/application/F3DOptionsTools.cxx
+++ b/application/F3DOptionsTools.cxx
@@ -135,7 +135,7 @@ static inline const std::array<CLIGroup, 8> CLIOptions = {{
       {"bar", "b", "Show scalar bar", "<bool>", "1" },
       {"colormap-file", "", "Specify a colormap image", "<filePath/filename/fileStem>", ""},
       {"colormap", "", "Specify a custom colormap (ignored if \"colormap-file\" is specified)", "<color_list>", ""},
-      {"colormap-discretization", "", "test", "<bool>", "1"},
+      {"colormap-discretization", "", "test colormap discretization", "<color_list>", ""},
       {"volume", "v", "Show volume if the file is compatible", "<bool>", "1"},
       {"inverse", "i", "Inverse opacity function for volume rendering", "<bool>", "1"} } },
   {"Camera",
diff --git a/library/options.json b/library/options.json
index 0ad042e75c..2ef270b0f6 100644
--- a/library/options.json
+++ b/library/options.json
@@ -247,8 +247,8 @@
         "default_value": "0.0, 0.0, 0.0, 0.0, 0.4, 0.9, 0.0, 0.0, 0.8, 0.9, 0.9, 0.0, 1.0, 1.0, 1.0, 1.0"
       },
       "discretization" : {
-        "type": "bool",
-        "default_value": "false"
+        "type": "double_vector",
+        "default_value": "1.0, 1.0, 1.0, 1.0"
       },
       "range": {
         "type": "double_vector"
diff --git a/vtkext/private/module/vtkF3DRenderer.cxx b/vtkext/private/module/vtkF3DRenderer.cxx
index f5ba4f252c..89199400c3 100644
--- a/vtkext/private/module/vtkF3DRenderer.cxx
+++ b/vtkext/private/module/vtkF3DRenderer.cxx
@@ -2230,9 +2230,13 @@ void vtkF3DRenderer::SetColormap(const std::vector<double>& colormap)
   }
 }
 
-void vtkF3DRenderer::SetColorDiscretization(const bool discretization) {
+void vtkF3DRenderer::SetColorDiscretization(const std::vector<double>& discretization) {
   auto logMsg = std::string("[Gapry PoC][Add CLI Options] " + std::string(__PRETTY_FUNCTION__));
   F3DLog::Print(F3DLog::Severity::Warning, logMsg);
+  for(auto& e : discretization) {
+    F3DLog::Print(F3DLog::Severity::Warning, std::to_string(e) + std::string(" "));
+  }
+  F3DLog::Print(F3DLog::Severity::Warning, std::string("\n"));
 }
 
 //----------------------------------------------------------------------------
diff --git a/vtkext/private/module/vtkF3DRenderer.h b/vtkext/private/module/vtkF3DRenderer.h
index df23463123..a8d95876ec 100644
--- a/vtkext/private/module/vtkF3DRenderer.h
+++ b/vtkext/private/module/vtkF3DRenderer.h
@@ -282,7 +282,7 @@ class vtkF3DRenderer : public vtkOpenGLRenderer
    */
   void SetColormap(const std::vector<double>& colormap);
 
-  void SetColorDiscretization(const bool discretization);
+  void SetColorDiscretization(const std::vector<double>& discretization);
 
   enum class CycleType
   {