Making a self deleting object?

I'm trying to make a vehicle that detects the current sim, and if it does not detect the proper sim, it will delete itself. Here's what I have so far, which doesn't work:

timer()
{
string currentSim;
string allowedSim;
currentSim = llGetRegionName();
allowedSim1 = Nowall;
allowedSim2 = Backstage;
if(currentSim != (allowedSim1 || allowedSim2))
{
llDie();
}
}

how do I make this work?

timer()
{
    list allowed_sims = [ "Nowall", "Backstage" ];    // could make this global
    string current_sim = llGetRegionName();

    integer len = llGetListLength( allowed_sims );
    integer a;
    for ( a=0; a<len; ++a )
    {
        if ( current_sim == llList2String( allowed_sims, a ) )
            a = 10000; // we are in an allowed_sim
    }

    if ( a < 10000 ) // we are not in an allowed sim
        llDie();
}

Untested, typed into the forums from scratch. May have typos or bugs... But it looks good to me. IM me if it doesn't work for you.

well, it complies alright, but the vehicle own't move when I get in ther cockpit. I never get the release keys button. Any ideas?

AM

here is something else you can try ....

on_rez(integer g)
{


string simname = "simname here" ;
string actualsim = llGetRegionName();
if (actualsim != simname)
{
llSay(0,"sorry not in proper sim ";
llSleep(1);
llMessageLinked(LINK_SET, 0, "de rez", "";
llBreakAllLinks();
}

and you can also put it into a timer

timer()
{




string simname = "simname here" ;
string actualsim = llGetRegionName();
if (actualsim != simname)
{
llSay(0,"sorry not in proper sim ";
llSleep(1);
llMessageLinked(LINK_SET, 0, "de rez", "";
llBreakAllLinks();
}

}