Paginated Report using PBI Dataset - Multi select optional parameter

Hi DEVs,

I am creating a pagingated report using PBI Dataset. I need to add 1 optional multi select parameter in report.

This is my main query:

EVALUATE

SUMMARIZECOLUMNs (

Table[ProductID],

Table[ProductName],
FILTER ( VALUES ( Table[ProductID]), Table[ProductID]) = @ProductID )

)

This dataset I created for parameter that will give me all product IDs in drop down

EVALUATE

SUMMARIZECOLUMNs (

Table[ProductID]

)

The above query is working for single select parameter only.

How to make it multi select and optional.