Maxx Function Filtering on two columns?

EDIT: For anyone that finds this on Google, the solution is, as the guy below said:

MaxInteractionStart = maxx(
FILTER(
Fact_Interaction,
Fact_Interaction[InteractionID] =earlier(Fact_Interaction[InteractionID]) &&
Fact_Interaction[InteractionRank] = <something goes here>
),
Fact_Interaction[InteractionStartDate])

thanks a bunch Greg_Deckler 

Original Q below:

So I know how to get the max of something based on colummn but I would like to filter by two columns.

See the function below, this gives me the max date for every InteractionID, but I also have an Interaction Rank so I would like the max InteractionStartDate based on both InteractionID and InteractionRank, where would I add this in?

MaxInteractionStart = maxx(
FILTER(
Fact_Interaction,
Fact_Interaction[InteractionID] =earlier(Fact_Interaction[InteractionID])
),
Fact_Interaction[InteractionStartDate])

how would I add a second filter for InteractionRank?