--- a/qiime2/qiime_diversity_alpha-group-significance.xml	Wed Jul 17 03:26:16 2019 -0400
+++ b/qiime2/qiime_diversity_alpha-group-significance.xml	Thu Jul 18 12:19:15 2019 -0400
@@ -10,6 +10,7 @@
 --i-alpha-diversity=$ialphadiversity
 
 
+#if $input_files_mmetadatafile:
 #def list_dict_to_string(list_dict):
 #set $file_list = list_dict[0]['additional_input'].__getattr__('file_name')
 #for d in list_dict[1:]:
@@ -17,8 +18,9 @@
 #end for
 #return $file_list
 #end def
+--m-metadata-file=$list_dict_to_string($input_files_mmetadatafile)
+#end if
 
---m-metadata-file=$list_dict_to_string($input_files_mmetadatafile)
 
 --o-visualization=ovisualization
 ;