not condition in tmap

[Anonymous]

Hi
I'm using enterprise version
Using tmap for setting up two outputs with different conditions.
When I use row1.country =="OP" in first output and  row1.country !="OP" in second output
All records comes out in second output  when data comes from input source with value "PO" --Correct
All records comes out in second output also when data comes from input source with value "OP" ---Why ?
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When I use !row1.countryOfRegistration.equals("OP") in first output and  row1.countryOfRegistration.equals("OP") in second output
All works fine
Is there any difference between them while using...or am missing something  ?
Thanks!!

[Anonymous]

The usage of the == operator for String does not work. == means EXACTLY the same object and not the same content.
Use as expression:

"OP".equals(row1.country)

or 

"OP".equals(row1.country) == false