How to get "Index" in Virtual Parameter?

[Michael Ducharme]

I got the problem fixed. Had to dig through the code to see what methods 
and attributes were available in the object. Working code is below - I 
am not used to javascript development but it seems to work well enough:


// Fetch IP for 'loopback0' Interface
let m = '';
let x = 'temp';
let foundint = false;
let goodint = false;
let intnames = declare(
   "Device.X_MIKROTIK_Interface.Generic.*.Name",
   {value: Date.now()});
let lowerlayers = declare(
   "Device.IP.Interface.*.LowerLayers",
   {value: Date.now()});
if (intnames.size) {
   for (let myint of intnames) {
     if (myint.value[0]=='loopback0') {
       x = myint.path.substr(0, myint.path.lastIndexOf("."));
       foundint = true;
       break;
     }
   }
}
if (foundint) {
if (lowerlayers.size) {
   for (let myint of lowerlayers) {
     if (myint.value[0]==x) {
       x = myint.path.substr(0, myint.path.lastIndexOf("."));
       goodint = true;
       break;
     }
   }
}
}

if (goodint) {
let ipaddress = declare(
   x + ".IPv4Address.*.IPAddress",
   {value: Date.now()});

if (ipaddress.size) {
   for (let myaddress of ipaddress) {
     if (ipaddress.value[0]) {
       m = ipaddress.value[0];
       break;
     }
   }
}
}

return {writable: false, value: [m, "xsd:string"]};