the filter send to service like this:

IssuesFilterEN filter = new IssuesFilterEN();
                filter.ProjectID = "1|2";
                filter.ExcludeClosed = true;
                filter.Components = "0";
                filter.Versions = "-1";
                filter.IssueID = "";
                filter.IssueTypes = "0";
                filter.IssuePriorities = "0";
                filter.IssueStatus = "0";
                filter.IssueResolutions = "0";
                filter.RiskLevels = "0";
                filter.Resources = Utility.CurrentUser.UserName;
                filter.ReportedByUserName = string.Empty;
                filter.SearchKeywords = string.Empty;
                filter.CreatedAfter = string.Empty;
                filter.CreatedBefore = string.Empty;
                filter.RevisedAfter = string.Empty;
                filter.RevisedBefore = string.Empty;

but i got the error info from Test Unit:

[SQL: SELECT this.issueid as issueid144, .... WHERE this.projid in (?, ?) and not this.issstatus = ? and resources3.userid in (?) ORDER BY this_.revised desc] ---> Failed to convert parameter value from a String to a Int32. ---> Input string was not in a correct format.

i thought that is encoding errors.but the error code is ONLY NUMERIC. i feel puzzled.