Hi Neha,
Basic understanding, the commands that work in your sql studio would work same way in MII as MII would basically route your commands to same sql/db. So if EXEC SQP param_1, param_2 works in studio/sql plus for your case, it should work here as well.
If i remember it correctly, for Oracle/SQL++, the command is execute proc_name('param_1', 'param_2');
It should give you result in MII Rowsets/Rowset/Row format that can readily be utilized in your app.
Note: Commands also depend on data server/connector type like it would be different for ODBC and OLEDB connectors. However, ultimately it depends on source system.
Try below syntax for your case:
exec USP_UPD_NOTIFICATION('[Param.1]','[Param.2]');
or
execute USP_UPD_NOTIFICATION('[Param.1]','[Param.2]');
Make sure you pass params in parameters section.
Hope this helps.
Regards,
Swaroop