This script will create parentheses around selected dimensions:
Option Explicit
'---------------------------------------------------------------------------------------
' Procedure : MakeRefDim
' Author : jherzog
' Date : 14.05.2015
' Time : 15:33
' Languages : VBA 6.5
' V5-Release: V5R19/21
' Purpose : Add brackets to dimension (ref dim)
' Parms : -
' Ret. Value: -
'
' Syntax : MakeRefDim
'
' Prereqs : An active drawing with dimensions
' Remarks : Interactive; multi-sel; try 'Outside rectangle selection trap'
'---------------------------------------------------------------------------------------
'
Sub CATMain() 'MakeRefDim()
Dim oAD As DrawingDocument
Dim InputObjectType(0)
Dim oSel As Object 'Selection
Dim oDim As DrawingDimension
Dim oDimVal As DrawingDimValue
Dim strStat As String
Dim n As Integer
Set oAD = CATIA.ActiveDocument
Set oSel = oAD.Selection
InputObjectType(0) = "DrawingDimension"
strStat = oSel.SelectElement3(InputObjectType, "Wählen Sie die Bemaßung aus", True, CATMultiSelTriggWhenSelPerf, True)
If (strStat <> "Normal") Then
MsgBox "Abbruch"
Exit Sub
Else
For n = 1 To oSel.Count2
Set oDim = oSel.Item2(n).Value
Set oDimVal = oDim.GetValue
oDimVal.SetBaultText 1, "(", ")", "", ""
Next
End If
oSel.Clear
End Sub