I recently gave an intro course in IDEA and one of the participants wanted to know how to obtain the date and time of when a file was created so that they could add it to the file name in a script they were creating. The functions doesn't exist within the IDEA basic keywords but it does exist within the objects that IDEA has access to, namely the Scripting.FileSystemObject which allows you to access all the information about a file. So to obtain the date created or last modified you could use something like this:
Option Explicit
Sub Main
Dim oFilebar As Object
Dim oFSO As Object
Dim oF As Object
Dim strFileName As String
'fist get a file
Set oFilebar = CreateObject("ideaex.fileexplorer")
oFilebar.displaydialog
strFileName = oFilebar.selectedfile
'obtain the file information
Set oFSO = CreateObject("Scripting.FileSystemObject")
Set oF = oFSO.GetFile(strFileName)
MsgBox oF.DateCreated
MsgBox oF.DateLastModified
Set oFilebar = Nothing
Set oF= Nothing
Set oFSO = Nothing
End Sub