diff --git a/scripts/reg01.py b/scripts/reg01.py
new file mode 100644
index 0000000..1610e7a
--- /dev/null
+++ b/scripts/reg01.py
@@ -0,0 +1,19 @@
+
+import re
+
+# string = "Tar-120umol"
+# string = "120umol tar 1"
+# string = "KMnO4-720umol"
+
+# string = "1_BL 16.4_T2_2"
+
+string = "HB-11-5"
+
+# match = re.search(r'-(\d+)', string) or re.search(r'(\d+)', string)
+match = re.search(r'-(\d+)$', string)
+
+if match:
+    extracted_number = int(match.group(1))
+    print(extracted_number)
+else:
+    print("No number found")