DBFL_SQL Library

I am trying to use the DBFL_SQL library to call a stored procedure in MySQL.
The call works fine if I do not use IN/OUT parameters for the Stored Procedure. However, I get a MySQL 1312 error when I attempt to send IN/OUT parameters to the Stored Procedure.
Does anyone have experience with this?
PS: I have already reached out to the developer but have not received an answer.
Thank you,
SFW

Hi Steve, sorry for the delay. I can see in our ticketing system that you received a reply from the developers on Friday morning, but your most recent follow-up question on Friday evening hasn’t been responded to yet. I have added a reminder to the ticket, so I hope you get an answer soon.

Thanks Martin.
SFW