How to put Control Objects of Manipulate into Opener View

I am attempting to put a control object of Manipulate[] into an OpenerView[] which will allow me to hide and show controls. The code below doesn't do what I want... but it should give you an idea of what I want.

Manipulate[Plot[Sin[x] + a, {x, -3, 3}],

OpenerView[{"Open to Control a", {a, 1, 4, ControlType -> Slider}}]]


This is suppose to open and close an openerview to hide and show the controller for a. But I can't get the slider to appear. Below is picture of the problem.

Something like this?

Manipulate[
Plot[Sin[x] + a, {x, -3, 3}],
OpenerView[{"open to control ", Control[{{a, 1, "a"}, 0, 10, 1}]}]
]

• Yes! Spent a couple hours on this and figured it out right after I posted it. lol. It seems like a good question that others might want to know the answer to so I'll leave it posted. Thank you for your time. – Michael McCain Dec 12 '15 at 5:29

I guess I spoke to soon. I figured it out. I'll leave this here for anyone that has the same question.

Manipulate[Plot[Sin[x] + a, {x, -3, 3}, PlotRange -> 2],
OpenerView[{"Open to Control a",
Control[{{a, 1, "a"}, 1, 8, Slider}]}]]