Update multiple nodes in SQL XML

Изменить в XML значения в нескольких узлах не получится,
The target of 'replace' must be at most one node, found 'attribute(selectedSum,xdt:untypedAtomic) *'
Выкручиваемся так, в цикле для каждой строки

declare @iCount int;
set @iCount = ( select xmlData.value('count(//*)', 'int') from [Metrolog].[dbo].[m_PWStatus] where deleted is null and pfId=12 and statusId=2 );

declare @i int;
set @i = 1;

declare @repl varchar(30) = '2890659.320';

while (@i <= @iCount)
 begin
 update [Metrolog].[dbo].[m_PWStatus]
  set xmlData.modify('declare namespace ttt="urn:metrolog.fsk-ees.ru"; replace value of (/rows/ttt:row[sql:variable("@i")]/@selectedSum)[1] with sql:variable("@repl")') where deleted is null and pfId=12 and statusId=2;
  update [Metrolog].[dbo].[m_PWStatus]
  set xmlData.modify('declare namespace ttt="urn:metrolog.fsk-ees.ru"; replace value of (/rows/ttt:row[sql:variable("@i")]/@selectedCnt)[1] with "250"') where deleted is null and pfId=12 and statusId=2;
  set @i = @i + 1;
 end