I execute the script
DECLARE
v_string varchar2(20);
v_string2 varchar2(20);
v_start_date date;
BEGIN
v_start_date := to_date(:bind_date, 'yyyy-mm-dd');
v_string := :bind_string;
v_string2 := :bind_string2;
DBMS_OUTPUT.PUT_LINE(v_start_date);
End;
/
and I get in binds window wrong data types of bind variables so I am not able to fill it.

Second problem, can I use clob as bind variable?
If I fill big clob I get
