How to reference the result of this M code, in a Parameter?

[mmace1]

I want to automatically limit my table loads to Jan 1st of 3 years ago. 

I wrote this code, to give me Jan 1st of 3 years ago. I'd like that (automatically-updating) result to then filter my table loads. 

= Date.StartOfYear(Date.AddYears(Date.From(DateTime.LocalNow()),-3))

And it gives the proper result. 

My next step is to create a parameter that = the output above.  Then I can filter by the parameter.  But when I select 'Query' as the suggested value for the parameter, it doesn't show the above query as an option

[CNENFRNL · Accepted solution]

@mmace1 , query used for parameter must be a list query, that's to say, the query evaluates to a list; therefore simply enclose your M code with {} to make it a list,

= {Date.StartOfYear(Date.AddYears(Date.From(DateTime.LocalNow()),-3))}