Procedures in Oracle

Can a procedure be called if its name is contained in a variable name?

I have a configuration table named "MY_CONFIG" having columns as source, request, succes_procedure.

Data will be like this :
Source                     Request                      Success_proc
S1                            R1                               Update_S1
S2                            R2                               Update_S2
S3                            R3                                null

I have another table where based on source and request and some other manipulations I have to update a status.
Table is like this
UniqueID                   Source                   Request               Status
1                               S1                          R1                        Success
2                               S2                          R2                        Faled.

If status is success and if there is an ebtry in success_proc column of table my_config, I have to do some more updates in tables.

I want to check in proceudre that if success procedure is present or not for a source and request like

SELECT success_proc into var_proc
FROM my_config
where source = S1 and request = R1;

Is there any way by which I can call proc like this :
var_proc and pass the required parameters to it
var_proc(P1,P2);