diff --git a/schainpy/model/jroplot.py b/schainpy/model/jroplot.py
index f4a8c53..8f2a2ec 100644
--- a/schainpy/model/jroplot.py
+++ b/schainpy/model/jroplot.py
@@ -1259,8 +1259,7 @@ class RTIfromSpectraHeis(Figure):
         
         tmin = None
         tmax = None
-        x = dataOut.getTimeRange()
-        y = dataOut.getHeiRange()
+        
         
         factor = 1
         data = dataOut.data_spc/factor
@@ -1283,6 +1282,9 @@ class RTIfromSpectraHeis(Figure):
         xlabel = "Local Time"
         ylabel = "Intensity (dB)"
         
+        x = dataOut.getTimeRange()
+        y = dataOut.getHeiRange()
+        
         if not self.__isConfig:
             
             nplots = 1