Simple button to SaveAs in javascript

[luca26365734e0y7]

hi all, I'm making buttons in some PDF documents using javascript. They all work except the most trivial thing, I can't make a button that does the SaveAs.
The javascript is trivially this:
app.execMenuItem ("saveAs");
When the mouse is released it does absolutely nothing, looking around does not seem to me that the syntax has changed, can you help me?

[try67]

Use "SaveAs" as the parameter, not "saveAs".

[luca26365734e0y7]

OMG... I had missed the capital letter

Sorry and TNX

[luca26365734e0y7]

It works well if it is opened in adobe reader, if it is opened with a browser (chrome / edge) it does not work, I guess precisely because it calls a specific action of the program.
Do you think there is a way to make it work even if opened via a browser?

[try67]

No.

[Thom Parker]

Browsers are not true PDF viewers. Or to put it another way, the PDF viewers created by the people who make web browsers suck. I would not expect a web brower to handle any interactive PDF featurs.