VBScript passing an array into SSRS VB code

Within SQL Server 2005 Reporting Services I am attempting to evaluate an expression which outputs an array which I attempt to pass to my VBScript code with my report. My parameter values are BU MC CD DU

The join function correctly outputs the string BU-MC-CD-DU I then use the split function within an expression to split the values and output as an array as such

 =Split(join(Parameters!ReportType.Value,"-"),"-",-1,1)

After which I then pass the array to my VBScript code within the report using the expression below within a textbox :

=Code.debugReportVisible(Split(join(Parameters!ReportType.Value,"-"),"-",-1,1))

My VBScript function is as follows

function debugReportVisible(pSelectedReports() ) as String
  dim debug as String
  debug = CStr(pSelectedReports(0))
end function

The code 开发者_如何学运维does not error but no value is displayed in the textbox.. Can someone tell me why this is?

Many Thanks,

So I ended up just passing the the hypen (-) seperated string to the 'isReportVisible function' from my join expression defined for the hidden property of each subreport (for e.g the BU sub report visibility hidden expression is as below)

=Code.isReportVisible(join(Parameters!ReportType.Value,"-"),"BU")  

function isReportVisible(pSelectedReports as String, pSubReport as String) as Boolean
      dim hidden as Boolean
      dim reportArray
      dim counter
      hidden = true
      counter = 0
      reportArray= Split(pSelectedReports,"-")
      for counter = 0 to UBound(reportArray)
      If reportArray(counter) = pSubReport Then
      hidden = false
      End If
    Next
      return hidden 
    end function

Hope this helps someone....