Help with creating a hopefully simple script

RouterOS Scripting
1

I am hoping I can get the help of someone here to make a simple terminal script that in pulls the mac address from ether1 and puts it in the following line

/interface bridge set 0 auto-mac=no admin-mac=

Thanks

2 
{
local mac [interface ethernet get ether1 mac-address]
/interface bridge set 0 auto-mac=no admin-mac=$mac
}