view.selectFolder() shows nothing

[mice2100]

Windows 10./Python3.8.2

I borrowed the main py from examples/pysciter.py
The TI code snap is:

self.on("click.func", "#btnBrowser", function(evt){
var fn = view.selectFolder();
view.msgbox("here...");
});

This just shows the message box, nothing happends to selectFolder(). Any idea?

[mice2100]

Somehow this works today. I guess this might be caused by other script.