Hi Amir,
The parameters in the calculation views can be used only during the data preview. But when a view is called within another view at run time, i think its not possible to use parameters(I am not sure about this though). Hana will by default neglect the parameter and provide complete result set.
Let me know if this answers your question or i will try out few other options and let you know.
Regards,
Rudrabhupal PB.