Using a Query Tag

I have created a Query Tag.
The Query within the tag -
SELECT Filler
FROM L8Recipes
where colrecipename = 'abc'
This works well. Can I replace the string 'abc' with the value from another tag or somehow use a variable?
I tried using readBlocking but I get the error "Error_ExpressionEval"

ChatGPT helped this time. Formatting.
This seems to work
SELECT Filler
FROM L8Recipes
where colrecipename = '{[.]L8_RecipeName.value}'