Union two tables based on Slicer

Hi All,

I am new to Power BI world.

My requirment is to display a SLICER with Key values which has Year part like Rxxxxx17xxxx, now based on slicer selected value, I have to display data for Rxxxxx17xxxx and Rxxxxx18xxxx (next year) in matrix.

So,

- created a slicer

- created one table (Current) which picks Rxxxxx17xxxx 

- created another table (Next) which pick Rxxxxx18xxxx 

These data are perfectly displayed in their individual tables.

Now, I need to combine maybe by using UNION, which i tried but it displays all keys. When I do some relationship with either Current or Next, then it displays either records.

How should I achieve my goal, please help?

This is code for Combine Table:

Table_Combine = DISTINCT(FILTER(UNION(SELECTCOLUMNS(Table_Current, "RiskReference",Table_Current[RiskReference]),SELECTCOLUMNS(Table_Next,"RiskReference",Table_Next[RiskReference])),NOT ISBLANK([RiskReference])))