I have just one comment about [b]./[/b] when i add this in code and variable panel ejs print message [b]Required files not found [/b]
So l delete [b]./[/b] and change to [b]"_data/photoelectric/0.gif"[/b] i also delete from code [b]./[/b] to become like it
material = "_data/photoelectric/sodio.gif";
potencialcorte = 2.28;
material = "_data/photoelectric/cesio.gif";
potencialcorte = 2.1;
So after run applet work fine and message not appear again i didn't know what the reason, but now is work fine!