When I execute the following it updates other cells that I did not create an if for.

How can just update the ones I am calling out in the for row and if function?

```
Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/Big Class.jmp" );
dt << New Column( "NewAge", Character, Continuous );
dt << New Column( "NewAge2", Character, Continuous );
dt << New Column( "NewAge3", Character, Continuous );
For Each Row(
If(
dt:Age == 14,
dt:NewAge = "Blah";
dt:NewAge2 = "Blah2";
dt:NewAge3 = "Blah3";
dt:Age == 15;,
dt:NewAge = "yay";
dt:NewAge2 = "yay2";
dt:NewAge3 = "yay3";
dt:Age == 16;,
dt:NewAge = "yo";
dt:NewAge2 = "yo2";
dt:NewAge3 = "yo3";
),
0
);
```