No_viable_alt_exception in painless script field

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1

Hi All,
I want to calculate a substring of a string field (starting from 0 till either a fixed position or till - symbol ) under kibana index pattern . However when I am trying to create a scripted field I am getting "Script is invalid" error

My script -
def tempVal = doc['fieldname.keyword'].value;
if(tempVal != null)
{
def FormattedVal = tempVal .subString(0, 6);
return FormattedVal ;
}

Error details (under preview result) -
"script": "def tempVal = doc['fieldname.keyword'].value; ...",
"lang": "painless",
"position": {
"offset": 143,
"start": 120,
"end": 178
},
"caused_by": {
"type": "illegal_argument_exception",
"reason": "dynamic method [java.lang.String, subString/2] not found"
}
}
}
]

Kindly assist.
Thanks in advance !
Regards,
Nivedita

2

try substring with a lower case S

3

Thanks , issue is resolved.

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4

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