diff --git a/swagger.yaml b/swagger.yaml
index f7546b1..4b58424 100644
--- a/swagger.yaml
+++ b/swagger.yaml
@@ -56,6 +56,10 @@ paths:
           schema:
             type: object
             properties:
+              infile:
+                type: string
+                description: Name of the json input file to utilise
+                #default: "/tmp/input.json"
               worksheet-name:
                 type: string
                 description: Label for the worksheet created in the spreadsheet
@@ -80,7 +84,7 @@ paths:
                 function: export-xlsx
                 input: 
                   files:
-                  - name: input.json
+                  - name: /tmp/input.json
                     data: |
                       jq(.input)                  
                   worksheet-name: "TestSpreadsheet"
@@ -91,7 +95,7 @@ paths:
       x-direktiv:  
         cmds:
         - action: exec
-          exec: /bin/json2excel -inputJson input.json -worksheetName "{{ .WorksheetName }}" -outputFilename '{{ .OutFilename }}'
+          exec: /bin/json2excel -inputJson {{- if eq (deref .Infile) "" }} "/tmp/input.json" {{- else }} {{ .Infile }} {{- end }} input.json -worksheetName "{{ .WorksheetName }}" -outputFilename '{{ .OutFilename }}'
           silent: false
           print: true
         - action: exec