Am I transforming the Looping boolean of TimeIndex correctly?

Question

I'm having a wee bit of trouble transforming the Looping boolean of the K7 TimeIndex Class, ready for encapsulation. I don't seem to be able to set it via my own green variable ?looping with parameter transformer directly in front of the TimeIndex Class and the following code. Am I doing it correctly?

snd doNotExpandFirst.
snd doNotTransformSubSounds.
snd Looping isNil ifFalse: [
    ?Looping
        varIfTrue: [snd Looping: true]
        ifFalse: [snd Looping: false]
].

In fact whilst we are here, could SSC shed some light on the doNotTransformSubSounds message. What does it do exactly?

Answer 1

The parameter name (looping) should not begin with an uppercase L but with a lowercase l:

snd doNotExpandFirst.
snd doNotTransformSubSounds.
snd looping isNil ifFalse: [
    ?Looping
        varIfTrue: [snd looping: true]
        ifFalse: [snd looping: false]].

Answer 2

Regarding doNotTransformSubSounds: As far as I know that means the ParameterTransformer only affects the one Sound to its left.