the column labels are initially set when using arrayToDataTable
to create the data table
so, instead of using addColumn
, you just need to change the existing labels
replace…
data.addColumn("number", '" + SelectedLine1 + "');
...
with…
data.setColumnLabel(1, SelectedLine1);
data.setColumnLabel(2, SelectedLine2);
data.setColumnLabel(3, SelectedLine3);
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