My figure is sinking through my plane!

Help! Please! I set up the physics system to dynamic, rigid body, and no sleeping, and my figure just sinks through the ground when I press ‘P’.:o

yea i know, it’s a common problem.
try this link and copy the logic brick and your character won’t walk trough things:

Thank you! I don’t believe someone posted in about five minutes!

Wait, I don’t think this is helping.