Mapping help needed

Hi ,

My requirement is there is data coming in one field at source  should be hidden based on Id's(30793064 & 30915527) and sent to target Node.If the Id's are

30793064 & 30915527 then Ustrd should be sent null else dor other Id's whateber is coming in Ustrd that should be mapped.

For two id's i.e if the Id is 30793064 & 30915527 then info coming in Ustrd Field should be hidden .

So I have used the below mapping.

If two mentioned id's are coming in payload this is working fine .And if i give some other Id numbers the value is getting supressed.

Please suggest me mapping for the above requirement.