microsoft excel - Use a Cell Value for a Paramater Value using in Power Query

I am using a query like below in power query Excel 2016:

let
   Source = Odbc.Query("dsn=AS400", "select * from libm61.emleqpm1 where STN1 = '03'  ")
in
    Source

I want to replace '03' with a value form cell AD2

Is this possible to do ?