addpointattrib(0, "layer", "");

string layers[] = split(chs("../../CONTROLER/lc_layers"), " ");
int len = chi("../../CONTROLER/lc_layers");

for(int i = 1; i<=len;i++)
{
    int pt = addpoint(0, i);
    string layer = ch("../../CONTROLER/lc_layer" + itoa(i));
    setpointattrib(0, "layer", pt, layer);
}