Getting error when executing storedProcedurewithSignature Adapter service.

Created a storedProcedure which returns xml output as CLOB Object and able to successfully compiled. When running the adapter service getting below error msg:

[ADA.1.316] Cannot execute the SQL statement “{call WM82.EMP_PROC( ?)}”. "
(42000/932) ORA-00932: inconsistent datatypes: expected - got -
ORA-06512: at “WM82.EMP_PROC”, line 7
ORA-06512: at line 1
"
ORA-00932: inconsistent datatypes: expected - got -
ORA-06512: at “WM82.EMP_PROC”, line 7
ORA-06512: at line 1

Did anyone get a chance to call storedProcedurewithSignature which is having output of type CLOB … Kindly through some light to resolve
storProcCall.JPG