How to create Dynamic Txt Flat file as destination in SSIS

How to create Dynamic Txt Flat file as destination in SSIS

1. Create a new flat file connection through Connection Manager. 
2. Once created then select the properties...
3. Click on ... option in Expressions
4. Select Property as ConnectionString 
5. Write done the Expression @[User::dest_path] + "FileName" + RIGHT("0" + (DT_STR,4,1252)MONTH( DATEADD( "dd", -1, getdate())),2)+RIGHT("0" + (DT_STR,4,1252)DAY( DATEADD( "dd", 0, getdate() )),2)+ (DT_STR,4,1252)YEAR( DATEADD( "dd", -1, getdate() ))+ ".txt" NOTE: @[User::dest_path] is a variable where we have mentioned the location (URL) so it will append this file in the same path.