transport CreateSNMPTransport FindObject node- id if transport null re

transport = CreateSNMPTransport(FindObject($node->id));
if (transport == null)
	return "SNMP transport err ";
oid = ".1.3.6.1.2.1.43.11.1.1.6";
vars = SNMPWalk(transport, oid);
if (vars == null)
	return "SNMP SNMPWalk err ";
x = "";
foreach (v: vars) {   
    //x = x.v->name."=".v->value.";";	
	x .= v->value.";";	
}

return x;