How 'move to' only y in actor "pelota"?

Well, another question more from one new newbie....
For to move one actor use 'move to' but, when I want to move only the Y axis relative at other actor (pelota)
What must I do?
Sorry, programated and learn english is a big trouble for mi...
I try that converted in 'any problem'
For to move one actor use 'move to' but, when I want to move only the Y axis relative at other actor (pelota)
What must I do?
Sorry, programated and learn english is a big trouble for mi...
I try that converted in 'any problem'