yeah OK thanks again, however when I changed to:
DECLARE @iNew_USEint
DECLARE @sqlnvarchar(MAX), @params nvarchar(MAX)
SET @sql = '
DECLARE @iNew bigint;
EXEC spA__InsertAccount
@sAccountNr = ''abc999'',
@sName = ''New name'',
@sAddress= ''Address'',
@sCity = ''PARIS.'',...