Boolean operator in Stream Selector condition always evaluates to false

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Have one of the condition where if my status code = 300 OR status code = 350 , they will run the same function. Hence i construct my stream selector condition as belows. Example :

${record:value('/statusId')== 300} || ${record:value('/statusId')== 350} ---> Function A
default ----> Function B

I tried run the pipeline followed the configuration, even my '\statusId\ is 300 , but the data will flow to function B.

I tried the symbol like || , or , | , comma but all are pointing to Function B.

If i remove of the status like , only put ${record:value('/statusId')== 300} , the data will flow to Function A.

Is there any symbol or way for me to put a OR condition in the condition text? Or only one condition allow in one field?