Operation Mapping determination at run time

Hello Experts,

My requirement is to identify the operation mapping at run time based on the complex logic.

Sender (Source message) ---> Run udf if output value is 1 Then OM1 else OM2 -> Receiver

Please note, Sender and Receiver are same. Based on the Source message, the RFC lookup call via udf needs to be done to identify the output value. If o/p value is 1 then Operation mapping 1 will be determined else Operation Mapping 2 will be determined.

Kindly provide your suggestion on this requirement.

Many Thanks

MP