Add multiline text note

I would like to place a mulite line text note with leader. However the secondary text line cannot appear.

 Thx!

Dim oStartPoint As Point3d
Dim oEndPoint As Point3d
Dim o3EndPoint As Point3d
Dim dimstl As DimensionStyle
Dim dimstls As DimensionStyles
Dim dimEl As DimensionElement


oStartPoint.x = 0
oStartPoint.y = 0
oStartPoint.z = 0
oEndPoint.x = 0.45
oEndPoint.y = 0.45
oEndPoint.z = 0
o3EndPoint.x = 0.85
o3EndPoint.y = 0.45
o3EndPoint.z = 0

 

Set dimstls = ActiveDesignFile.DimensionStyles

Set dimstl = dimstls.Item(1)
dimstl.NoteLeaderType = MsdDimNoteLeaderTypeLine
Set dimEl = CreateDimensionElement1(Nothing, rotation, MsdDimType.msdDimTypeNote)


dimEl.AddReferencePoint ActiveModelReference, oStartPoint
dimEl.AddReferencePoint ActiveModelReference, oEndPoint
dimEl.AddReferencePoint ActiveModelReference, o3EndPoint


dimEl.PrimaryText = "First Line"
dimEl.SecondaryText = "Secondary Line"
dimEl.Redraw DrawMode

ActiveModelReference.AddElement dimEl

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