How to change vote in Facebook Poll

Hello,
I hope that you guys are doing well, i would like to ask about how to change vote in facebook pool, i have created a pool in Facebook groupe and i have chosen the both choices and now i wonder how to delete my vote i have searched in the app for many solution but unfortunately i couldn't find any!

Thank you!

Simply click the previously selected item again, and it will be reselected.

Leon jamesh said:

Simply click the previously selected item again, and it will be reselected.

Click to expand...

Sadly it doesn't work.