How can I remap ACE editor shortcuts?

[mskar]

I'd like to use Ctrl-d to delete right and Ctrl-u to delete to start of line in the ACE editor.
Currently, Ctrl-d deletes word left and Ctrl-u to uppercases word.
I tried the settings below without any luck.

aceVimMap('<C-d>', '<Delete>', 'insert');
aceVimMap('<C-u>', '<C-o>d0', 'insert');

Ctrl-d still deletes word left and Ctrl-u simply stops working.
How can I get these bash/emacs style keybindings to work in the ACE editor?

[nemya9066]

I used this mapping to delete to start of the line:
aceVimMap('<C-u>', '<Esc>d0xi', 'insert');
You can use this to delete a character to the right but it won't work with <C-d> which is what you want to use
aceVimMap('<C-s>', '<Esc>lcl', 'insert')
Apparently Ctrl keys that are already mapped can't be remapped If there is a function to unmap a key in Ace maybe it will solve the problem.