How do I create a ladder?

I would like to create a ladder for my game

The specifics are that the player changes animation to the climbing animation, changes X value to the ladder X value, and moves 2 pixels/second as long as up is pressed. The player does have the platformer value and the ladder is not solid.

So far, I can get the player to change animation and X value, but it will not move correctly, and instead speeds up the ladder for a few pixels before dropping down about 50 pixels into a solid block, and gets stuck there.

Help please.

Have you seen the official template? You can also search the tutorials section.

Thanks so much!

I can't believe I didn't see this. Thanks!