is there any way to pass myStringArray to the RTD function?
Data = "A,B,C"
Dim myStringArray() As String `
myStringArray = Split(Data, ",")`
Application.WorksheetFunction.RTD("rtd.server.1", "", "" + URL+ "", "User", "Query", myStringArray)
Expecting the RTD server to receive "URL", "User", "Query", "A", "B", "C" as the arguments. I tried the above but it did not work.
Since WorksheetFunction.RTD() method (https://learn.microsoft.com/en-us/office/vba/api/excel.worksheetfunction.rtd) signature (i.e.: how many parameters it is accepting and of which type), you could use a "Preprocessor", like the following:
Sub PreProcessingForRTD(progID As Variant, server As Variant, topic1 As Variant, ParamArray otherTopics() As Variant)
Dim topics(1 To 28) As Variant
topics(1) = topic1
Dim iTopic As Long
iTopic = 1
Dim arg As Variant
For Each arg In otherTopics
Select Case True
Case IsArray(arg)
Dim argArg As Variant
For Each argArg In arg
iTopic = iTopic + 1
topics(iTopic) = argArg
Next
Case Else
iTopic = iTopic + 1
topics(iTopic) = arg
End Select
Next
'change 'Debug.Print' to whatever real usage you are making of 'Application.WorksheetFunction.RTD()'
Debug.Print Application.WorksheetFunction.RTD(progID, server, topics(1), _
topics(2), topics(3), topics(4), topics(5), topics(6), topics(7), topics(8), topics(9), topics(10), topics(11), topics(12), topics(13), topics(14), topics(15), topics(16), topics(17), topics(18), topics(19), topics(20), topics(21), topics(22), topics(23), topics(24), topics(25), topics(26), topics(27), topics(28))
End Sub
That you will use in your "main" sub as follows:
Dim DATA As String
DATA = "A,B,C"
Dim myStringArray() As String
myStringArray = Split(DATA, ",")
Dim url As String
url = "myURL"
PreProcessingForRTD "rtd.server.1", "", "" + url + "", "User", "Query", myStringArray