Help with "do as server" script

Hi all,

I have a button with code to create a number of records to a subtable...

The code is:

---

let reply := dialog("Confirmation!", "I will create " + '# of Payments' + " records, with Bill Data.
Continue?", ["Create", "Cancel"]);
if reply = "Create" then

...rest of the script

---

The above code working fine but it's a bit slow in the web app.

So I tried:

---

if ninoxApp() = "web" then
do as server

let reply := dialog("Confirmation!", "I will create " + '# of Payments' + " records, with Bill Data.
Continue?", ["Create", "Cancel"]);
if reply = "Create" then

...rest of the script

---

This code accepted but does nothing.

Is there some limitation in this senario?

Thanks