@lo93 Could you please check dateIssue variable type is DateTime or String in 5.3.8?
If dateIssue is a valid DateTime string(“2021-11-24”) or any string value means it doesn’t work with DateTime member functions TryCF.com .
What I figured it out since the value comes from the database, in the version 5.3.2, the value returned is sometimes null which is correct since we compare with !isNull(). With the update, this value is not anymore NULL but an empty string. Is it something that changed from the version 2 to 3 ?