How to work around read only DynaPDFFieldExMBS?

SDKs Plugins
1

I wanted to ask others MBS DynaPDF user.
DynaPDFFieldExMBS seems to be read only, how to workaround it?, i wanted to make a ObjHandle for the “AddActionToObj” MBS DynaPDF.

Wanted to make something like these :

Dim objHandle As New DynaPDFFieldExMBS
objHandle.FieldType = 0
objHandle.FieldName = ListJavascriptField.CellValueAt(o, 1)
createJS = pdf.CreateJSAction(ListJavascriptField.RowTagAt(o))
ActionReply =  pdf.AddActionToObj(pdf.kotField, pdf.koeOnMouseUp, createJS, objHandle)

Tried code above but getting

Example.btnEditJavascript.Action, line 115
The constructor of this class is protected, and can only be called from within this class
Dim objHandle As New DynaPDFFieldExMBS
2

To create a field, please use the various field creation methods.
e.g. CreateTextField, CreateButton, CreateCheckBox, etc.