--- a/optitype.xml	Wed Sep 23 15:35:45 2015 -0400
+++ b/optitype.xml	Mon Nov 23 09:00:07 2015 -0500
@@ -29,10 +29,10 @@
 #set $input_fq = ' '.join($fastqs)
 && python  \$OPTITYPE_DIR/OptiTypePipeline.py 
 $read_type --input  ${' '.join($fastqs)}
-#if $beta != None: 
+#if str($beta) != '': 
  --beta $beta
 #end if
-#if $enumerate != None: 
+#if str($enumerations) != '': 
  --enumerate $enumerations
 #end if
 --outdir $outdir
@@ -63,7 +63,7 @@
       <option value="--dna">DNA</option>
     </param>
     <param name="beta" type="float" value="" min="0.0" max="0.1" optional="true" label="homozygosity beta" help="The beta value for for homozygosity detection"/>
-    <param name="enumerations" type="integer" value="" min="1" max="5" optional="true" label="Enunerations" help="The number of enumerations"/>
+    <param name="enumerations" type="integer" value="" min="1" max="5" optional="true" label="Enumerations" help="The number of enumerations"/>
     <param name="outdir" type="hidden" value="output_dir"/>
   </inputs>
   <outputs>