Stuck in prison

[RAF]

I'm stuck in the prison. I can't get the doors opened. Please help...

 

[piggy]

see the plug inside the forcefield? (on the third pic) pull it.

 

[RAF]

Thanks for a quick reply

I've already pulled the plug. I've been to the room next to the room on the third pic, and tried to push the "buttoms on the fift pic. I've piled boxes on each other so that I could jump to the first floor (the fourth pic)