Sorting report by a custom column date

Is it possible to sort a column within a report view by a date that is being pulled from a collection? Text mode code below. displayname=Date ready to publish listdelimiter= listmethod=nested(predecessors).lists querysort={predecessor}.{actualCompletionDate} textmode=true type=iterate valueexpression={predecessor}.{actualCompletionDate} valueformat=atDate I would like the report to sort by this column with oldest dates at the top. Is it possible I tried adding: "sortType=asc" but an error message "Unable to edit the column text mode data in the view builder" pops up and will not allow me to save changes. Thanks. Cameron Howitt