Use the index name in a scripted field

Elastic Stack Kibana
1

I want to create a scripted field in an index pattern which takes the first word of the index's name and concatenate to it another value.
How can I access the name of the index via painless in the scripted field?
for example:
index name= 'x1-index*'
scripted field=x1+'_'+doc.['some_string'].value

2

Try this to access the name.

String idxName = doc['_index'].value;

return idxName;
3

it is working!
thanks

4

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