Autocomplete - Options for a child table field

Trying to set autocomplete - Options for a child table, by using query output. whats wrong in below code is any other option to set the child table fields -options
sku_add: function (frm, cdt, cdn) {
frappe.call({
method: “logistic.utils.get_voucher_detail”,
args: {
‘agmtNo’: frm.doc.agreement_number,
},
callback: function (r) {
if (r.message) {
skuDetail = r.message
let options = r.message.map(item => ({
label: ${item.sku_code} - ${item.sku_name},${item.quantity}),
value: item.name

                }));
  
                // Iterate through rows of the child table
                (frm.doc.sku || []).forEach(row => {
                    let grid_row = frm.fields_dict.sku.grid.get_row(row.name);
                    if (grid_row) {
                        let field = grid_row.get_field('sku_code_autocomplete');
                        if (field) {
                            // Set the options for the Autocomplete field dynamically
                            field.df.options = options.map(opt => opt.label).join('\n');
                            field.refresh();
                        }
                    }
                });
                refresh_field("sku");
            }
        },
    });
},