PowerView does not take input parameters at run time. In order to change the data being presented at runtime the user must use a filter or the query author must use a non-deterministic function in t...
It is now possible to define Parameters in Power BI Desktop, annotating them with metadata (name, description, expected data type and allowed values), reference these parameters from your queries, data model and report elements (labels, etc.). We'll continue making incremental improvements on top of the existing Parameters feature - so if there are specific items that you would like us to do based on this feature, please cast your votes. : )
