相关疑难解决方法(0)

我有一个在地图上显示折线的函数，这部分正在工作，现在我想实现一个隐藏折线的函数，但我找不到我的错误，提前致谢。

function cargaMapaCYL(mapa, varControl){
    var limite = null; 
    limite = [
        new google.maps.LatLng(42.49956716,-7.019005501),
        new google.maps.LatLng(42.49947126,-7.029286373),
        new google.maps.LatLng(42.50904062,-7.049299123),
        new google.maps.LatLng(42.50722622,-7.069103626),
        new google.maps.LatLng(42.50452387,-7.000150672),
        new google.maps.LatLng(42.49348015,-6.983058917),
        new google.maps.LatLng(42.49843269,-6.971666546),
        new google.maps.LatLng(42.51765791,-6.956909023),
        new google.maps.LatLng(42.52010069,-6.927429186),
        new google.maps.LatLng(42.50992238,-6.914231493),
        new google.maps.LatLng(42.50096695,-6.879679821),
        new google.maps.LatLng(42.48775868,-6.857775832),
        new google.maps.LatLng(43.23907504,-3.293216584)], "#000000", 5);

    var contorno= new google.maps.Polyline({
        path: limite,
        strokeColor: "#000000",
        strokeOpacity: 1.0,
        strokeWeight: 2
    });
    if(varControl==true){
        contorno.setMap(mapa);
    }
    if(varControl==false){
        contorno.setMap(null);
    }
}