Question in CNX regarding date variable

[venkatap]

CNX version - 6.1.20221219.1
In NAB, is there any specific documentation I can learn, on how to pass a variable, for example, date variable from the form widget to a sub-query (of a query in data source) to filter the data?
sample code.PNG

[sean.lanktree]

The blog post link below walks through an example:

https://www.cnxcorp.com/blog/turbo-c...tual-variables