postfix_logrotate_rotate is looking for an int

postfix_logrotate_rotate is looking for an int, not a string.
diff --git a/manifests/server.pp b/manifests/server.pp
index c131135..4387d83 100644
--- a/manifests/server.pp
+++ b/manifests/server.pp
@@ -166,7 +166,7 @@
   $max_use_postfix_amavis   = '25',
   ## ASF Custom Logrotate Variables
   $postfix_logrotate_path          = '/var/log/mail.log',
-  $postfix_logrotate_rotate        = '7',
+  $postfix_logrotate_rotate        = 7,
   $postfix_logrotate_rotate_every  = 'day',
   $postfix_logrotate_compress      = true,
   $postfix_logrotate_delaycompress = true,