speed commands issue

im having a slight problem with my one aircraft, it not a huge one just a system that dosent wont to work as i planned.

when i reach 35 speed the wings will deploy and when i get to a speed between 35-60 speed it will say another command for the wings and when i get over those speeds it will send yet another command to wings, i cant figure out how to only deploy between 2 diffrent speeds, the way i had it before it would keep opening and closeing constantly can anyone help?

speed <35
speed 35-60
speed >60

only am able to get speed <35 and >35 working right

integer a;
default
{
    state_entry()
    {
        llSetTimerEvent(0.2);
    }
    timer()
    {
        integer speed = (integer)(
    llVecMag(llGetVel()) * 1.94384449 + 0.5);
        if (a == 1)
        {
            if (speed < 35)
            {
                llWhisper(0,"wings out");
                llMessageLinked(LINK_SET, 0, "wing_open", NULL_KEY);
                a = 0;
            }
        }
        else if (speed > 35)
        {
                llWhisper(0,"wings in");
                llMessageLinked(LINK_SET, 0, "wing_closed", NULL_KEY);
                a = 1;
        }
    }
} 

Don't know what a is doing but you could always add it back in:

default
{
	state_entry()
	{
		llSetTimerEvent(0.2);
	}
	timer()
	{
		integer speed = (integer)(
			llVecMag(llGetVel()) * 1.94384449 + 0.5);
		if (speed < 35)
		{
			llWhisper(0,"wings out");
			llMessageLinked(LINK_SET, 0, "wing_open", NULL_KEY);
		}
		else if (speed >= 35 && speed <= 60)
		{
			llWhisper(0,"wings in");
			llMessageLinked(LINK_SET, 0, "wing_closed", NULL_KEY);
		}
		else if (speed > 60)
		{
			llWhisper(0,"wings other");
		}
	}
}

yep that what i was looking for, wosent sure if the && stuff would work with this

EDIT:
it barly works now, it is very unresponcive