--- a/edger.xml	Wed Nov 22 03:57:37 2023 +0000
+++ b/edger.xml	Wed Sep 04 15:50:01 2024 +0000
@@ -4,7 +4,7 @@
     </description>
     <macros>
         <token name="@TOOL_VERSION@">3.36.0</token>
-        <token name="@VERSION_SUFFIX@">4</token>
+        <token name="@VERSION_SUFFIX@">5</token>
     </macros>
     <edam_topics>
         <edam_topic>topic_3308</edam_topic>
@@ -130,11 +130,8 @@
             <when value="files">
                 <repeat name="rep_factor" title="Factor" min="1">
                     <param name="factorName" type="text" label="Name" help="Name of experiment factor of interest (e.g. Genotype). One factor must be entered and there must be two or more groups per factor. Optional additional factors (e.g. Batch) can be entered using the Insert Factor button below, see Help section for more information. NOTE: Please only use letters, numbers or underscores, and the first character of each factor must be a letter">
-                        <sanitizer>
-                            <valid initial="string.letters,string.digits">
-                                <add value="_"/>
-                            </valid>
-                        </sanitizer>
+                        <validator type="empty_field"/>
+                        <validator type="regex" message="Please only use letters, numbers or underscores">^[\w]+$</validator>
                     </param>
                     <repeat name="rep_group" title="Group" min="2" default="2">
                         <param name="groupName" type="text" label="Name" help="Name of group that the counts files belong to (e.g. WT or Mut). NOTE: Please only use letters, numbers or underscores (case sensitive), and the first character of each group must be a letter">