Hi,

Just to share this simple macro codes for those users who need to create multi-line description in custom property tab.

What it does is that it will create 4 empty lines in your description tab,

Then you can proceed to enter your description and click apply.

I have modified the code to also include original description value if there's any so as not to overwrite it accidentally.

Sub main()

Set swApp = Application.SldWorks

Set swModel = swApp.ActiveDoc

Set swModelDocExt = swModel.Extension

'Get Full Path to active file

Dim Filename As String

   Filename = swModel.GetPathName

   Debug.Print Filename

'Get active configuration name

Dim configName As String

   configName = swApp.GetActiveConfigurationName(Filename)

   Debug.Print configName

'Point to customer property object

Set swCustProp = swModelDocExt.CustomPropertyManager(configName)

'Create multi-line format description

Dim newDesc As String

  newDesc = swCustProp.Get("Description") & vbLf & _

                     "" & vbLf & _

                     "" & vbLf & _

                     ""

'Copy custom property to Description

swCustProp.Add3 "Description", 30, newDesc, 1

'Rebuild

Dim bRetValue As Boolean

  bRetValue = swModel.ForceRebuild3(True)

End Sub