Multiple trigger after update

Hello everyone, does someone know if it is possible to write  multiple trigger after update in the same field ?  I'm sorry but I'm not so expert in coding..

For example:

I have a table (VISITA)  with a multiple choice field (DECEDUTO)  that have a trigger after update formula that modify a DATA field. It works perfectly.

if Deceduto = 1 then
    let xdatadec := DATA;
    PAZIENTI.(DECESSO := xdatadec)
end

I would like to add to that another trigger formula to show a dialog, create a new record in another table (DICHIARAZIONE DI DECESSO) and print the record layout view; I've tried in multiple ways without  any results.

This formula  works good if insert in a button but doesn't if insert in the trigger after update of the multiple choice field above.

if Deceduto = 1 then
    let check := dialog("STAMPA DOCUMENTO", "VUOI STAMPARE LA DICHIARAZIONE DI DECESSO ?", ["SI", "NO"]);
    if check = "SI" then
        let myID := ID;
        let NN := (create 'DICHIARAZIONE DI DECESSO');
        let xdata := PAZIENTI.DECESSO;
        let xpaz := PAZIENTI;
        let xclient := PAZIENTI.PROPRIETARIO;
        NN.(Data := xdata);
        NN.(PAZIENTE := xpaz);
        NN.(CLIENTI := xclient);
        printRecord(NN.ID, "DICHIARAZIONE DI DECESSO")
    else
        null
    end
end

Any ideas ?? Thanks in advance