a example of import excel to database

what i fill is batch size 1000,

datasource name:jdbc/Appian,

excel document:cons!ofuploadedexcel,

newcolumn:null,

newcolumnvalue:null,

Number of columns to read in row: column number of excel document,

sheetNumber:1,

table name:constant of table name

but it report error index:1 size:1, what it mean?