Hi all, I need a way to populate lines on a BL of a transaction. I want to avoid CL because of speed issues. Anyone knows any way? I found:

var sublist = context.form.getSublist({
    id: "item"
});
sublist..setSublistValue({
                id: "item",
                line: 0,
                value: 10
            });

But although the fields are populated if its a select field then they are not sourced.