Search Form With Different Fields To Access Database

I have finished my database using Dreamweaver ASP VBScript and Access, the only thing left is to create the searching system. My search form works fine when posting just one filed. The results page Recordset goes as follows.

Code:

I need 7 different fields on my search form, this what I did but it doesn't work.

Parameters:

Name: MMColParam
Type: Text
Value: Request.Form("Ref")
Default value: 1

Name: MMColParam
Type: Text
Value: Request.Form("New_resale")
Default value: 1

"Price" is a special one because this is a list menu with different amounts, like 50.000, 70.000, 90.000, and so one. The idea is to make this list menu post to the result page, only to display records under or equal to the given value. less or equal > than 50.000 or 70.000, etc.