How do you put in a seed in minecraft pocket edition?

What you need to do is copy the seed from the app onto a piece of paper or something. Then you open up minecraft Pocket Edition and go to "Start Game". Then tap the "Create New" button on the top right corner of the screen and then put the seed in the "Seed for the world generator" box. Then you just press the "Create World" button, and then you should be done. You will have the seed that you want.