[ms_access] invisible control

[rkulez]

Dear group members,
I have a form with two controls named ctrl_1 and ctrl_2.
1) I wish ctrl_2 will be invisible when the form is loaded(opened?)
2) I wish when ctrl_1 takes the value "10" ctrl_2 become visible.
3) I wish when I want to make a new record (when I click new record button) and 
see the form again ctrl_2 become invisible.
I have accomplished the first and second tasks but couldn't the third one.
Can you please give an advice?
Best wishes to all..
Ruhi