we are new in streamsets !!
In our usecase we are uploading file in s3 which predefined name as abcd_sggshs_31-04-2018.csv
we need to capture this above parameter which are in our file name,we are generating events after uploading file in s3,using expression evaluator we are trying to capture this parameter in json file in s3.
but we are not getting desired output.
below are the expression we are using please suggest the correct expression to get the file name.