Help with VBA Code in Access 2010

Hi. I have following code below.  Purpose is to open the form "Financial-Table form-PO".  I would like to use as a filter (2 queries): "qryInputForm-CLOSED",
"qryInputForm-CLOSED-before conversion".

How can i modify below listed code?

I changed lines

stfilter="qryInputForm-CLOSED-before conversion"
 DoCmd.OpenForm stDocName, stfilter, , stLinkCriteria

However, I got an error "type mismatch"

Please see the code below (before adjustments)

Dim stDocName As String
    Dim stLinkCriteria As String
    Dim stfilter As String
    Caption = "PAID LOANS MODE AFTER CONVERSION"
    stDocName = "Financial-Table form-PO"
    DoCmd.OpenForm stDocName, , , stLinkCriteria

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