--- a/retrieve.xml	Mon Jan 22 16:42:08 2018 -0500
+++ b/retrieve.xml	Wed Jan 24 11:26:24 2018 -0500
@@ -18,7 +18,7 @@
 ]]>
     </command>
     <inputs>
-        <param format="txt" name="files" type="data" label="Select input files" multiple="true" optional="false" help="Select one or more txt files containing a list of accession numbers." />
+        <param format="json" name="files" type="data" label="Select input files" multiple="true" optional="false" help="Select one or more json files containing a list of accession numbers (as result of the Search tool)." />
         <param name="dataformat" type="select" label="Select a data format" help="Select a data format for the accession numbers related files that will be downloaded">
             <option value=".fastq">.fastq</option>
             <option value=".fastq.gz">.fastq.gz</option>