diff --git a/schainpy/model/io/jroIO_param.py b/schainpy/model/io/jroIO_param.py
index e8ad20e..4785bd1 100644
--- a/schainpy/model/io/jroIO_param.py
+++ b/schainpy/model/io/jroIO_param.py
@@ -386,7 +386,7 @@ class HDFWriter(Operation):
         self.description = description
         self.set_kwargs(**kwargs)
         #print("self.uniqueChannel: ", self.uniqueChannel)
-        #self.uniqueChannel = uniqueChannel
+        self.uniqueChannel = uniqueChannel
 
         if self.metadataList is None:
             self.metadataList = self.dataOut.metadata_list
@@ -405,7 +405,7 @@ class HDFWriter(Operation):
 
             if dataAux is None:
                 continue
-            elif isinstance(dataAux, (int, float, numpy.integer, numpy.float)):
+            elif isinstance(dataAux, (int, float, numpy.integer, numpy.float_)):
                 dsDict['nDim'] = 0
             else:
                 if self.uniqueChannel: #Creates extra dimension to avoid the creation of multiple channels
diff --git a/schainpy/model/proc/jroproc_voltage.py b/schainpy/model/proc/jroproc_voltage.py
index 09ea4b9..65fc81d 100644
--- a/schainpy/model/proc/jroproc_voltage.py
+++ b/schainpy/model/proc/jroproc_voltage.py
@@ -183,9 +183,8 @@ class selectHeights(Operation):
         """
 
         self.dataOut = dataOut
-
-        if minHei and maxHei:
-        #if 1:
+        #if minHei and maxHei:
+        if 1:
             if minHei == None:
                minHei = self.dataOut.heightList[0]
 
@@ -201,10 +200,8 @@ class selectHeights(Operation):
             minIndex = 0
             maxIndex = 0
             heights = self.dataOut.heightList
-
             inda = numpy.where(heights >= minHei)
             indb = numpy.where(heights <= maxHei)
-
             try:
                 minIndex = inda[0][0]
             except:
@@ -218,7 +215,6 @@ class selectHeights(Operation):
         self.selectHeightsByIndex(minIndex, maxIndex)
         #print(self.dataOut.nHeights)
 
-
         return self.dataOut
 
     def selectHeightsByIndex(self, minIndex, maxIndex):
@@ -239,6 +235,7 @@ class selectHeights(Operation):
         """
 
         if self.dataOut.type == 'Voltage':
+            #print("SOS",minIndex, maxIndex)
             if (minIndex < 0) or (minIndex > maxIndex):
                 raise ValueError("Height index range (%d,%d) is not valid" % (minIndex, maxIndex))
 
@@ -11531,7 +11528,7 @@ class Decoder(Operation):
 
             self.ndatadec = self.__nHeis #- self.nBaud + 1
 
-            self.datadecTime = numpy.zeros((self.__nChannels, self.__nProfiles, self.ndatadec), dtype=numpy.complex)
+            self.datadecTime = numpy.zeros((self.__nChannels, self.__nProfiles, self.ndatadec), dtype=numpy.complex_)
 
         else: