Based on dropdown selection,how to show and hide the "Add Note".

 

Iam able to do the thing like,On form Load event iam hiding all the "Add Notes".

 

But once i will select some value form dropdown based on selected value i have to show the selected value "Add Note".(This iam not able to do).For example,i have 4  "Add Notes".On form load iamhiding all the 4"Add Notes".And on selecting the dropdown only that note i have to show.

 

Please help me out of this.