Maximum of 25 popup_from_query columns in updateable report

Question

There appears to be a limit of 25 popup_from_query columns defined in an updatable report.
By way of a simple example, I have a SQL Query (updateable report) defined with the following columns:
select
htmldb_item.popup_from_query(1, 1,'select 1 a, 1 b from dual',10) col1,
htmldb_item.popup_from_query(2, 1,'select 1 a, 1 b from dual',10) col2,
htmldb_item.popup_from_query(3, 1,'select 1 a, 1 b from dual',10) col3,
htmldb_item.popup_from_query(25, 1,'select 1 a, 1 b from dual',10) col25
from table
When I add a 26th entry, it errors at runtime with "report error: ORA-06502: PL/SQL: numeric or value error"
HELP - I really need to be able to use about 31 of these columns in my query!

Answer 1

Jules - You know that for each column in the query at least 1 byte of HTML will be generated. Of course it's more than that, but let's assume it's just 1 byte. We also know that there is a 32K limit on the size of the HTML generated for each row. So by your reasoning, there would be no limit on how many columns your query could have even though each additional column generates one additional byte. This is not logical.
Also, I tested this using your simple query (on htmldb.oracle.com) and I hit the limit when I go over 20 popup_from_query columns. So, the limit is obviously not hard-coded at 25.
Scott