Mapping, Condition on Node

Hi Expert

I have a simple requirement, but not sure how to do it in BPM mapping.

Below is my Source and target Structures.

Source:                                                                                           Target:

sRecord                0..unbounded                                                         tRecord          0..unbounded

     value              0..1                                                                           Value          0..1

     deleteFlag       0..1

I can get multiple sRecords, with some having DeleteFlag = X and others with no DeleteFlag field.

I have to create target record only when delete flag field does not exist.

If DeleteFlag does not exist , then create tRecord.

Example input

sRecord

     value               1

sRecord

     value               2

     deleteFlag        X

sRecord

     value               3

     deleteFlag        X

sRecord

     value               4

sRecord

     value               5

In above case target record should be created only for value 1,4 and 5

Please advice