need to replicate table based on a column flag and stop after first instance of replication after th

We are required to implement goldengate replication for logic described below.

We need to start replicating from our tracking tables for all changes happening (insert,update,delete) until the common column "DATA_STAT_CDE" flaged with any value (R,E,S) other than null. (with the exception that the very first time the column become not bull, we need to replicate and stop replicating further changes.)

For EG 

first insert

Insert > col1 = a col2=b DATA_STAT_CDE=null >> replicate

subseqent changes to the table other than making DATA_STAT_CDE not null.

update > col1 = c col2=d DATA_STAT_CDE=null >> replicate