How to achieve RCP when building Wrapped stage

[benny.lbs]

I have built a Wrapped stage as follow,

Input Table Def:
A: decimal[21,3];
B: decimal[21,3];

Output Table Def:
C: decimal[21,3];

And the Command to be a script contain AWK as follow,
awk '{Out = $1 + $2; printf("%21.3f\n", Out);}'


Testing Job Design
Row Generator ==> Wrapped Stage ==> Peek

But when run the job, it only show Col C in Director, even I have turn RCP option to "ON" in output tab.


Is there any trick on the setup ? How to achieve RCP ?