How To Get The Parameter Type In VB.net?

I am currently using the following embedded code to get the selected values from a Parameter and display in a textbox. I however have a number of reports and I don't want to include this in all of them. I have created a dll with some other functions but when i try to include the following function it throws an error on the Parameter type. What am I doing wrong, I am not all that familiar with dot net?




Public Function ShowParameterValues(ByVal parameter as Parameter) as String
Dim s as String

If parameter.count <= 5 then
If parameter.IsMultiValue and parameter.count > 1 then
s = " "
For i as integer = 0 to parameter.Count-1
if i = parameter.count - 1
s = s + CStr(parameter.Label(i))
else
s = s + CStr(parameter.Label(i)) + ", "
end if

Next
Else
s = " " + CStr(parameter.Label(0))
End If
else
s = " Only a maximum of 5 selection values can be displayed. "
End if
Return s
End Function