--- a/loadandplot.xml	Fri Oct 06 11:07:21 2017 -0400
+++ b/loadandplot.xml	Fri Oct 06 13:37:53 2017 -0400
@@ -15,8 +15,7 @@
       regionsgalaxyids='c(${region_galaxyids})'
       #set region_names = '|'.join( [ str( $r.name ) for $r in $regions ] )
       regionsfilenames='${region_names}'
-      #set region_header = str( $regionsheader )
-      #if $region_header != "None":
+      #if $regionsheader:
         regionsheaderfile='${region_header}'
       #end if
       
@@ -26,8 +25,7 @@
       featuresgalaxyids='c(${feature_galaxyids})'
       #set feature_names = '|'.join( [ str( $f.name ) for $f in $features ] )
       featuresfilenames='${feature_names}'
-      #set feature_header = str( $featuresheader )
-      #if $feature_header != "None":
+      #if $featuresheader:
         featuresheaderfile='${feature_header}'
       #end if