Dynamic Adobe Forms

I am currently working with NWDS 7.14 and Life Cycle Desiger 7.1. My Requirement is the following: dependent on a user input (e.g. selected checkbox) i want to switch the attus of certain ui elements to "invisble".According to some previous posts, I use the follwing JS-code to achieve the described functionality:

var check = CheckBox1.rawValue;

if (check== '1') {

Subform3.presence="visble";

Subform3.presence="hidden";

}

(the code lies in the exit event of the checkbox)

unfortunately, nothing happens, the code does not work.

Could anyone please provide help?