Here is the setup:
Q1 (Single Choice)
Q2Equation (Equation) -> Always Hide this question
Code:
{Q2Filter_1=if(Q1.NAOK == "1", "Y", "")}
Q2Filter (Multiple Choice) -> Always Hide this question
Q2 (Single Choice)
Code:
Array Filter: Q2Filter
If you make Q2Filter -> Always Hide this question then Q2 Answer Options will not be shown. Hiding the question seems to disable it, instead of simply hiding it.
The solution I did to this, is to simply make a CSS class in the template editor @ template.css
Code:
.displayNone {
display: none;
}
Then apply this to the question via "Advanced Settings -> CSS class(es): displayNone"