TOmb raider 2013 how to flame bow arrow ?

i need to shoot a burning arrow by my bow in to a flamable gas but i don’t know how to flame my arrow first i am playing it on PC so any help ?
Answer #1
First of all, have you been inside the helicopter to collect the new bow and the flame arrow ability?? If you have, then you basically need to just “select” the flame arrows. If you haven’t, then you’ll need to do that first…
With the xbox controller, you press the button to select the “BOW”… You then press the same button, to select between the different type of arrows.
This might be the same with the PC.
For example, if “1” on the keyboard selects the bow, then try pressing 1 again to select through the arrows.
Answer #2
thanx mate pressing the 1 key in keyboard flame the bow 1