Show table of data where the user selected the schema and table

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Hi,

I'm currently using sqlpage with postgresql. I have following index.sql:

SELECT
	'form' AS component,
	'query_form' as id,
	TRUE AS auto_submit,
	'GET' AS method;

-- topics are the schemata in the db
WITH topics AS (SELECT jsonb_agg(jsonb_build_object('label', schema_name, 'value', schema_name, 'selected', CASE WHEN schema_name = $topicChoice THEN 1 ELSE 0 END)) AS topic FROM information_schema.schemata)
SELECT topic AS options,
	'topicChoice' AS name,
	'select' AS type,
	'Thema' AS label,
	'Wählen Sie ein Bereichsthema' AS empty_option,
	(SELECT $topicChoice) AS description,
	TRUE AS searchable,
	TRUE AS readonly
FROM topics;

WITH tables AS (SELECT jsonb_agg(jsonb_build_object('label', table_name, 'value', table_name, 'selected', CASE WHEN table_name = $tableChoice THEN 1 ELSE 0 END)) AS t FROM information_schema.tables WHERE table_schema = $topicChoice)
SELECT t AS options,
	'tableChoice' AS name,
	'select' AS type,
	'Tabelle' AS label,
	'Wählen Sie eine Tabelle' AS empty_option,
	(SELECT $tableChoice) AS description,
	TRUE AS searchable,
	TRUE AS readonly
FROM tables
WHERE $topicChoice IS NOT NULL;

SELECT 'table' AS component;
-- How do I get the data from table $topicChoice.$tableChoice?

I want to display a table with the data in $topicChoice.$tableChoice which is dynamically generated. Is there a way to do this? Thank you for any help!