Two buttons for the same function?

Hello world!

First of all, thanks for your amazing work.

I would like to know if it is possible to bind different buttons to trigger the same function.
In practice, I want to command LEFT TRIGGER by pushing 'x-3' or 'button 10'.

I thought editing x360.ini could solve that, with something like:
Left Trigger=x-3
Left Trigger=10
But the second line is simply ignored.

Thank you for your help.