Subject rfunc procedure does not work in Firebird 2.5
Author softdestek
Firebird 1.5 is trying to ask the employee strcount procedure.
But the Firebird 2.5 does not work.
What can I do for work.

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SELECT STRCOUNT( '.', '81.52.525') FROM RDB$DATABASE;

error message:
SQL Error: invalid request BLR at offset 60 function STRCOUNT is not
defined module name or entrypoint could not be found. Error Code:
-104. Invalid token The SQL: SELECT STRCOUNT( '.', '81.52.525') FROM
RDB$DATABASE