Why an encapsulated class parameter would work with an !EventValue but not a literal with units.

Question

I have an encapsulated class where a Sound it contains has the following expression in one of its parameters:

{?rapidRetrigger varIfTrue: [
    (?duration - 2 samp)
] ifFalse: (?duration)}

?duration is a parameter of my encapsulated class and I'm doing a little arithmetic on it inside my class. 

After encapsulating my Duration parameter will accept an expression with an !EventValue in it:

!Duration s

but not a literal value:

0.1 s

Why is that?

 

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Ah, I found out the answer before finishing the question. I'll post it up anyway in case anyone else bumps into this issue. 

What I did was change the type of my Duration parameter from HotValue to HotTime in the class editor. 

All is well. 

Answer 1

Alan answers:

Ah, I found out the answer before finishing the question. I'll post it up anyway in case anyone else bumps into this issue. 

What I did was change the type of my Duration parameter from HotValue to HotTime in the class editor. 

All is well.