I need to make changes to OBX 5 which shows as immutable

I have tried ConstructClone, ThrowOnError, and Streams but I can't get the syntax correct

Example

OBX|1|TX|2000.02^REASON FOR REQUEST^AS4|142|REASON FOR REQUEST: Total Cost: 0.00||||||O
^^^^ remove "REASON FOR REQUEST" ^^ add cr/lf so down stream reports can be formatted more easily