You can use the Handsontable JS code to add values to a grid at runtime by reading the query string, splitting the values, and inserting rows.

Spreadsheet Deep Customizations

Hi Mr. Singh,  Thanks for your answer.

In order to validate the way to store the values in the form I have tested passing the values to a text field, but I´m afraid that I need more help with the way to work with the JS Code and Handsontable that you post here, could you share an example for the JS code or maybe a joget app please.?   

Finally I found a solution with Java Script 

<script type="text/javascript">
    $(function(){
        var value = decodeURIComponent("#requestParam.lista_deproductos#"); // Replace with the parameter name you declared in datalist action
        var values = value.split(';');
        var hot = FormUtil.getField("lista_deproductos").data("hot");
     
        // Iterate over each value and set it in the table
        $.each(values, function(index, value) {
            if (value.trim() !== "") { // Ensure non-empty values
                hot.setDataAtRowProp(index, 'id_producto', value);
                
            }
        });

    });
</script>