Hi,
Yes,you can do that.
On button verificar(action type -"Execute Script") write following js-
var sku = RMPApplication.get("sku");
var precio = RMPApplication.get("precio");
var descuento = RMPApplication.get("descuento");
id_my_array.id_sku[0].setValue(sku);
id_my_array.id_precio[0].setValue(precio);
id_my_array.id_descuento[0].setValue(descuento);
where - id_my_array is array identifier
id_sku,id_precio,id_descuento is column identifier
sku,precio,descuento is value variable of Text input.
If you are still facing any problem, please revert back.
Thanks,
Sweta