Clarification on upload-batch example

Author: stevenmatthew

articles/storage/blobs/blob-cli.md

@@ -68,14 +68,14 @@ You can use the `az storage blob upload-batch` command to recursively upload mul
 
 In the following example, the first operation uses the `az storage blob upload` command to upload a single, named file. The source file and destination storage container are specified with the `--file` and `--container-name` parameters.  
 
-The second operation demonstrates the use of the `az storage blob upload-batch` command to upload multiple files. The `--if-unmodified-since` parameter ensures that only files modified with the last seven days will be uploaded. The value supplied by this parameter must be provided in UTC format.
+The second operation demonstrates the use of the `az storage blob upload-batch` command to upload multiple files. The `--if-modified-since` parameter ensures that only files modified within the last seven days will be uploaded. The value supplied by this parameter must be provided in UTC format.
 
 ```azurecli-interactive
 
 #!/bin/bash
 storageAccount="<storage-account>"
 containerName="demo-container"
-lastModified=`date -d "10 days ago" '+%Y-%m-%dT%H:%MZ'`
+lastModified=`date -d "7 days ago" '+%Y-%m-%dT%H:%MZ'`
 
 path="C:\\temp\\"
 filename="demo-file.txt"
@@ -96,7 +96,7 @@ az storage blob upload-batch \
     --pattern *.png \
     --account-name $storageAccount \
     --auth-mode login \
-    --if-unmodified-since $lastModified
+    --if-modified-since $lastModified
 
 ```