I am trying to put in a parameter as "Null:Blank." This parameter works for =TR() formula on Excel interface. However, in VBA editor, when including "Null:Blank" as part of .RequestParam, the request class module will auto terminate itself when I execute the code. When putting it as .DisplayParam, VBA editor will pop-up an error window saying "Automation Error."

My ultimate goal is to replace NULL value with Blank in Eikon COM API Dex2. Any suggestions?