diff --git a/script/MultiRegionScan.py b/script/MultiRegionScan.py
index c247b5f4..9d5d9be2 100644
--- a/script/MultiRegionScan.py
+++ b/script/MultiRegionScan.py
@@ -162,7 +162,7 @@ class SpectrumReader(ReadonlyRegisterBase, ReadonlyRegisterArray):
             Scienta.stepSize.write(self.region['estep'])
         
         try:
-            Scienta.setPassEnergy(self.region['epass'])
+            Scienta.setPassEnergy(int(self.region['epass']))
         except KeyError:
             pass
         try: