How to create a Userform with dependant comboboxes?

i have created a userform and the part I am having problems is with 3 combo boxes and 1 command box. The 3 combo boxes are using a drop down list Combo Box Type = 8 different parts, Combo Box Status = 3, and Combo Box Universal =3.

comboboxtype= Pulling from the 8 different type of products 1 of these have to be selected.

Comboboxstatus= Current, Out of Date and if nothing is entered in the master spreadsheet it is Blank

comboboxuniversal= yes, no and if nothing is entered in the master spreadsheet it is blank

how do i in VBE create the code to do a search based on
type= new
Status=Current
Universal="blank" (nothing entered)

The type is a worksheet that is in the master workbook and the status and universal are fields in the worksheets. Each worksheeet is layed out identical.

This is what I have so far. I was able to get it to work by using a worksheet area and doing the drop down list based on that field

Private Sub cmdContinue_Click()
If Me.cboType.Value = "" Then
MsgBox "Please Enter a Valid Platform.", vbExclamation, "Report Status"
Me.cboType.SetFocus
Exit Sub
End If
With Sheets(Range("A2").Value)
.Range("A1:H" & .Cells(Rows.Count, 1).End(xlUp).Row).AdvancedFilter copytorange:=Sheets("reports").Range("A1:H1"), Action:=xlFilterCopy, criteriarange:=Range("B1:C2")
End With
End Sub

I am checking in the first part to make sure something is entered in the cbotype box first. The other 2 boxes I dont really need to make sure that there is anything entered. the 2nd part of the code is looking up in A2 where I orginally entered the Cbotype info before i made a userform. and then was copying to a output spreadsheet and the range was B1:C2 which was.
1 2 3

A Type Universal Status
B New Yes

Any help is greatly appreciated