Run-time parameterization of discrete sample time in generated code?

I have created an atomic sub-system that I want to generate code from (C++ interface), which will be used in various places in our code base. The block will be executed in discrete-time using one single sample time. The thing is that I would like to parameterize the generated code with the sample-time at the time of instantiation of the C++ class, prior to execution. I have added a parameter "sampleTime" to the block but the code generator hard codes the value of the sample time that was currently present at the time of code generation. This is a problem for blocks that make use of the sample-time in their calculations, for example the "Rate limiter" block. Note that it is only needed to set the sample-time once at start (before stepping), and it is not needed to change it during execution.

[TAB]

What "Storage class" you are using for parameter "sampleTime" ? Is it "Auto" ?

[Pontus Bergsten]

I have tried the various storage classes that are available in the "Pick tunable parameters"-list, but it doesn't matter which option I select.