Send key to firefox without activating firefox

[r0n]

Is it possible to send a key (space) to the firefox window without activating it?
I looked in this topic:
Work without activating window

And tried acc object actions, but could not find a way to do this.

[Gintaras]

Try SendKeysToWindow.
pasting to notepad (when notepad is in background)

[r0n]

Thank you!!!