Rename a chosen file

Question

hey, I´ve some probs with renaming files...here´s
how it goes:
I browse for a file and want to rename it.
the new name is already generated.
and now I just want to replace the old name of the file with
my new generated one and "save" this to the filesystem - means
overwrite the old filename.
in the documentation I´ve found this code:
var original = air.File.documentsDirectory.resolvePath("AIR
Test/test.txt");
var newFile = air.File.documentsDirectory.resolvePath("AIR
Test/copy.txt");
original.copyTo(newFile, true);
but I don´t know how to point on the directory of the
file...because I browse to it. in the docs the directory is already
set...
I´ve tried to replace
"air.File.documentsDirectory.resolvePath("AIR Test/test.txt"); "
with the source (means url) of my file and
"air.File.documentsDirectory.resolvePath("AIR Test/copy.txt"); "
with the url I´ve put together out of the parent path of the
chosen directory, my new filename and its extension. but I got this
error message: "TypeError: Value undefined (result of expression
original.copyTo) is not object."
maybe it sounds confusing but I hope some of you guys can
help me out.
thanks so far.

Answer 1

ok...I´ve found my mistakes and now it works...was just
pointing to the wrong path/url...