InputBox to Choose Array

I want to run a Macro in one spreadsheet that allows the user (who is not computer literate) to select an array of assignments from a spreadsheet where they are listed from A1:B27 with names in Col "A" and Assignments in Col "B".

When I run the code, I get the InputBox, which allows me highlight the range of cells run-time error '424': Object Required

Dim AssignmentArray As Variant 
Dim rng As Range 
Set rng = Application.InputBox(prompt:="Select Assignments from worksheet", Type:=64) 

AssignmentArray = rng.value 

I feel like I could debug something that was entered into rng, but since the highlighted cells aren't passed into rng I don't have anything to work through. I believe that I need to specify another object but I don't know what/how.

Many Thanks

When I change the accepting variable type to variant, I get error '13' type mismatch.

Thank you! I kept "Set" when I didn't need to keep it...

Set AssignmentArray= 
'I needed to use 
AssignmentArray =