Modules & VBA :: Opening A Query With Parameters - Data Type Conversion Error

Here's my Goal: To open a saved query that has a parameter, setting that parameter via a VBA sub.

Here's my Problem: I was getting various errors, but after debugging my program a bit, it comes down to a "Data Type Conversion Error"

Here's my Code:

Set db = CurrentDb
Set qd = db.QueryDefs("qryMY_DATA")
qd.Parameters(0) = Me.txt_ReferenceID
Set rs = qd.OpenRecordset("qryMY_DATA", dbDynaset)

Code:
'*** Database Variables
Dim db As DAO.Database, rs As DAO.Recordset, gq As DAO.QueryDef, prm As DAO.Recordset

I've been all over the forums and tried several different approaches, all to no avail. The Query runs fine in the QDT, but kicks back an error when I try to run it from my sub.