Welcome to the Make community!
The correct format is
{{ get(1.variable; "name") }}
(copy-paste the above into the field, or type it exactly as shown)
or
{{get(1.variable;name)}}
You might be interested in Autocomplete Commonly-Used Functions in IML (Mapping) Fields!
Hope this helps! Let me know if there are any further questions or issues. P.S.: investing some effort into the tutorials in the Make Academy will save you lots of time and frustration using Make!
— @samliew