Scratch

Hello, I'm having trouble with my levitating platforms. Every time I'm making a levitating platform goes up the playable character will fall right through instead of staying on it, and so I keep having to press the jump button to get caught up with it.
Here is the script for the platform going up. Every time the levitating platform moves left or right the character will stay on, but the character will slip off.
[scratchblocks]
when gf clicked
hide
go to x: [72] y: (-56)
forever
glide 3 secs to x: (72) y: (56)
glide 3 secs to x: (72) y: (-56)
end
Here is the script for the platform going left and right.

[scratchblocks]
when gf clicked
hide
go to x: (-72) y: (56)
forever
glide 3 secs to x: (-72) y: (56)
glide 3 secs to x: (72) y: (56)
end
Here is the script for the character to not fall through the floor.

[scratchblock]
when I receive [start v]
forever
repeat until <color [grey] is touching [green] ?>
change y by (-5)
end

Oh yes I forgot to mention, the levitating platforms do have the color green.