category_for.id/category_for conditions do not find anything

[JonathanSchmidt1]

I am trying to search for journals by category and all my queries returned no results.
Now I tried one of the examples

dimensions-api-lab/archive/2021-05-Honda/2021-05-Honda.ipynb

Line 841 in 98db4f0

"where category_for.id = \"2211\"\n",

also with a total count of 0

q = """
search publications 
for \"\\\"chassis control\\\"~3\"
where category_for.id = "2211"
return publications[id+concepts_scores] sort by times_cited limit 1000
"""
dsl.query(q)

even changing to

q = """
search publications 
where category_for.id = "2211"
return publications[id] sort by times_cited limit 1000
"""
dsl.query(q)

gives an empty result.