Hi Tom;
Here is a working SP example that uses input variables ...
DECLARE AddDecName PROCEDURE FOR ST_INS_WIP_DCNMS
@dec_names_id = :dec_names_id,
@dec_names_dec_id = :dec_names_dec_id,
@first_names = :first_names,
@last_name = :last_name
USING SQLCA;
EXECUTE AddDecName;
HTH
Regards ... Chris