Problem with linked object rotation

Hi to everyone!
I'm starting now to learn lsl and I have a "big" problem. Thanks in advance for your time and help!

I'm trying to build a bar that rotates when you push 1 of two buttons. A total of 3 prims, linked togheter:

bar= root
button ON= child
button OFF= child

But when I click on 1 button, all the linkset is rotating...How can I make the 2 buttons fixed and only the bar rotating? Is it possible? Below my simple code (I know that I have to add something else, but I don't know very well...)

default
{    
    touch_start(integer X)
    {
        string button = llGetLinkName(llDetectedLinkNumber(0));
        if (button=="ON")
        {
        llSetText("I'm rotating!", <0,1,0>, 1.5);
        llTargetOmega(<0,10,0>,PI/6,1);
        }
        else if (button=="OFF")
        {
        llSetText("Stopped",<1,0,0>, 1.5);
        llTargetOmega(<0,0,0>,PI/6,1.0);
        }
    }
}

Thank you very much for your help and your time !

Ludo

http://rpgstats.com/wiki/index.php?title=LlTargetOmega

You need to make sure that the rod isn't the root prim of the linkset but one of the children.

But the problem is that the Rod has to be linked as root with the 2 buttons, using this code(maybe it's not the correct one...).
In this case when you click ON or OFF it should start rotating...

Problem solved! Thanks. below the script, if you need it:
/54/8a/296214/1.html#post2244793