Try:

sams_club_section=<<thisSection>>

This is the synax for referring to variables and macros, the $name$ syntax 
only works inside of macros for text subsitution.

On Friday, April 3, 2020 at 7:42:28 PM UTC+2, David wrote:
>
> This code shows my shopping items and whether I've gotten them yet or 
> not.  It lists everything grouped in sections.
>
> At the bottom of each section, I want a "New" button that opens a  new 
> tiddler.  This is working.
>
> But I'd love to pre-fill that "sams_club_section" field with the current 
> section, which is stored in the "thisSection" variable.
>
> The dollar before and after syntax, as shown below, in the $button code, 
> is not right.  I've tried a few others.  I'm sure you guys know how to do 
> it.
>
> <$list filter="[list[$:/.my/data/Shopping/SamsClubSections]]" 
> variable="thisSection">
>
> !! <<thisSection>>
>
> <$list 
> filter="[<thisSection>listed[sams_club_section]tag[ShoppingItem]tag[ToGet]]" 
> variable="item">
> &nbsp; &nbsp; <$checkbox tiddler=<<item>> tag="Selected"/> <<item>><br/>
> </$list>
>
> <$button>
> <$action-sendmessage $message="tm-new-tiddler"
>  title=""
>  tags="ShoppingItem SamsClub"
>  sams_club_section="$thisSection$"
> />
> New
> </$button>
>
> </$list>
>
>
>

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