\\overset{\\leftrightarrow}{O B}

[Kanan02]

Hello, is there anything to convert this expression?
Of there's converter for single arrows it will also suit me)
Thanks in advance for reply

[Kanan02]

I found that the problem is in overset what is the replace for it?

[ForNeVeR]

The closest I was able to get is \matrix{\leftrightarrow \\ O B}:

[Kanan02]

Thanks