shipstation error

many mods but getting this when trying to import orders

Code:

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PHP Fatal error: Uncaught Error: Undefined constant "DATE_TIME_FORMAT" in /shipstation_zc.php:105

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Find this section in /includes/languages/lang.english.php ...

Code:

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    'DATE_FORMAT_LONG' => '%A %d %B, %Y',
    'DATE_TIME_FORMAT_WITHOUT_SECONDS' => '%m/%d/%Y %H:%M',

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... and add the highlighted line

Code:

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    'DATE_FORMAT_LONG' => '%A %d %B, %Y',
    'DATE_TIME_FORMAT' => '%m/%d/%Y %H:%M:%S',
    'DATE_TIME_FORMAT_WITHOUT_SECONDS' => '%m/%d/%Y %H:%M',

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Does that correct the problem?