Create a func_mover, name it something like 'func_mover_1'.
Create a script file for your map (new text document in the same folder as your map file, call it the same as your map but give a .script extension).
Paste the two script events below into it. Edit the $yourfuncmover to $<whatever you named your func_mover in the editor>.
Make sure to add the dollar sign.
Now create triggers in your map.
Give them the the key 'call' 'moveup' and 'call' 'movedown' respectively for moving up, or down.
Use this script to move your mover up and down.
The $yourfuncmover.move() command takes two values: the direction and the amount of units to move.
like this $mover.move(-2,200) //up 200 units. -1 = down and all other angles (0-360) are the regular x-angles you can move to.
Code:
void moveup() {
$yourfuncmover.move(-2,248); //move up
sys.waitFor($yourfuncmover);
}
void movedown() {
$yourfuncmover.move(-1,248); //move down
sys.waitFor($yourfuncmover);
}