diff --git a/out/artifacts/TCellSim_jar/TCellSim.jar b/out/artifacts/TCellSim_jar/TCellSim.jar
index a74606a..76e5b5c 100644
Binary files a/out/artifacts/TCellSim_jar/TCellSim.jar and b/out/artifacts/TCellSim_jar/TCellSim.jar differ
diff --git a/src/main/java/Plate.java b/src/main/java/Plate.java
index bc7c06b..3e3d705 100644
--- a/src/main/java/Plate.java
+++ b/src/main/java/Plate.java
@@ -28,11 +28,15 @@ public class Plate {
         this.sourceFile = sourceFileName;
         this.wells = wells;
         this.size = wells.size();
+
         List<Integer> concentrations = new ArrayList<>();
         for (List<Integer[]> w: wells) {
             concentrations.add(w.size());
         }
-        this.concentrations = concentrations.toArray(new Integer[concentrations.size()]);
+        this.concentrations = new Integer[concentrations.size()];
+        for (int i = 0; i < this.concentrations.length; i++) {
+            this.concentrations[i] = concentrations.get(i);
+        }
     }
 
     public void fillWellsExponential(String sourceFileName, List<Integer[]> cells, double lambda){