It doesn't work

I tell you want I want that my trigger does:
In the south area are standing units in any order
I want that the take the quickest way into a north area just straight up to the north my trigger that they [should] do it is:

Pick all Units ins south Area order picked Unit to move to Point(X Koordinate at Position of picked Unit,Y Center of North Area)

But nothing happens they are only standing around stupidly. ?emote_confused
What made i wrong? Or is there a bug

the correct action should be

pick all units in SOUTH-REGION and do (move picked unit to center of NORTH-REGION (instantly))

aargh I forgot to say that they should walk into the North Region

I should be like this

before trigger
|-------------------------------------------------------------------|
|North Region
|
|
|-------------------------------------------------------------------|
|South Reagion
|
|...x....................x................x.........................x............|
|................x......................................x......................x..|
|...................................x..............................................|

the x are the units

after the units walked some time
|------------------------------------------------------------------|
|North Region
|
|...x............x......x.........x......x............x...........x........x..|

You Can Use Unit - Issue Order With A Point To Make Them Walk