CSV file receiver (Remove the last field value)

Hi All,

I'm working on a CSV file receiver in the below format.

Srinivas,123,xyx,K

Gawshan,123,xyx,R

Himaval,123,xyx,Q

I want to strip off the field value on the end K, R and Q while writng the file in CSV, using some file adapter setting.

Any suggestions would be hightly appretiated.

Thanks

AJ