There are two versions of the "get [ ] from [ ]" block. One of them takes a text attribute for the structure, another takes anything.
For the text one, the above screenshot should be correct.
For the anything one, you would need to use it with an attribute.
Create attribute (type: Anything).
set attribute to [get data with name: unit_knight]
get [name] from [attribute]
edit:
Oh, and make sure that when you use the name of a field in design mode (such as your "Name" field), you type what the field name is, not the label. You're using a lowercase n, so you're likely already doing this, but I thought I'd mention it.