rant about Functions arguments and variables

RouterOS Scripting
1

Discovered today that if you send a function an argument, you can no longer use a global variable within the function. Once a argument is passed to the variable, the global variable is no longer referenced by the root, but only by the arguments that are passed in.

Example:

:global "physInterface" ether6;

:global "AddSingleVlan" do={
    /interface vlan add interface=$physInterface name=$1 vlan-id=$2;
    :put "VLAN $2 has been added";
    
$AddSingleVlan $newvlanname $newvlanid

Does not work. RouterOS will kick back an error stating that interface was not set/defined.


However this does…work.

:global "physInterface" ether6;
:global "AddSingleVlan" do={
    /interface vlan add interface=$1 name=$2 vlan-id=$3;
    :put "VLAN $2 has been added";
}
$AddSingleVlan $physInterface $newvlanname $newvlanid