Elastic search - sense plugin tokenize last 7 digits from right
<p>I have data indexed in this format 676767 2343423 2344444 32494444.I am trying to tokenize last 7 digits from the right. Pattern is working in online tool but the same is not working in sense plugin. 
Pattern : "pattern":   ".*([0-9]{7})" : Returns 6 digits including space. If the value is more than six then tokenizer is null.</p>

<p>Another pattern which shows error in sense plugin : .*(\d{7}) . Backslash shows error.</p>