You can use the LotusScript Evaluate function to run the Notes V3 version of this FAQ. If you prefer a pure LotusScript version, this example takes a text list (tl1) with the values "Elem1":"Elem2":"Elem3" and turns it into "Elem1":"Elem3". You will have to do some fiddling with the Redim Statement to make sure that you have enough space (eg, the element you wish to remove is not in the list).
Dim db As NotesDatabase Dim ws As New NotesUIWorkspace Dim session As New NotesSession Dim i As Integer Dim j As Integer Dim textList As Variant Dim outList As Variant
Set uidoc = ws.CurrentDocument ' get the current uidoc Set doc = uidoc.Document ' get the backend doc
textList = doc.GetItemValue("tl1") ' Get the list and put it in a variant Redim outList(Ubound(textList)-1) As Variant ' Dim the outlist j = 0 For i = 0 To Ubound(textlist) ' Loop through and check for the element to be removed If textList(i) <> "elem2" Then ' Check for the value to replace (could be a variable) outList(j) = textList(i) ' Populate the outlist j = j + 1 End If Next Call doc.ReplaceItemValue("tl1",outList) ' replace the original list with the outlist Call uidoc.Reload ' reload the UIDoc with the new backend values