How to show the week number by ISO8601

[york]

Hi Guys:

   I have a file with a column named date, and the I use the function week in the power query to get the corresponding week number, but I want the week number can be calculated by ISO8601, how can I make it?

   And I still want to show the current date and week number in my power bi home page, how can I make it?

[wdx223_Daniel]

= let a=#date(2023,2,5) in Text.Format("#{0}-#{1}-#{2}",List.Transform({Date.Year,each Number.ToText(Date.WeekOfYear(_),"\W00"),each Date.DayOfWeek(_,Day.Monday)+1},each _(a)))