Use of xml.modify to insert parameters into specific element of an xml column

Question

I would like to use a stored procedure to insert some values passed in as parameters into elements in the xml of a column. I have this so far The following parameters:

Answer 1

Try this

declare @ins xml 
    ''+
    @activity_name+
    ''
    +@display_name+
    ''
SET @devices_xml.modify('
    insert sql:variable("@ins") into (/Profile[ID=sql:variable("@user_id")]/User/Activities)[1]')

Or

SET @devices_xml.modify('
      insert 
             {sql:variable("@activity_name")}
             {sql:variable("@display_name")}
              
      into (/Profile[ID=sql:variable("@user_id")]/User/Activities)[1]'    )