How select all records using VBA code if field are empty in the criteria form

I have the following very lengthy VBA code in an on print event of a report.  But there are two fields on the form frmSelectDateRangeAndMembers that if left blank by the user are to get all records for txtMonth and txtMemberName.

How would I change the code to accommodate this?

Here's the code:

Private Sub Detail_Print(Cancel As Integer, PrintCount As Integer)
   
    'Group 1 Reporting Starts Here...
    'Column 1 (Goal) code...
    Me.txtListingsTakenGoal = Nz(DLookup("[ListingsCount]", "tblMemberGoals", "[TeamMember] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [GoalMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [GoalYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear), 0)
    Me.txtListingsSold = Nz(DLookup("[ListingsSold]", "tblMemberGoals", "[TeamMember] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [GoalMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [GoalYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear), 0)
    Me.txtBuyersSold = Nz(DLookup("[BuyersSold]", "tblMemberGoals", "[TeamMember] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [GoalMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [GoalYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear), 0)
    'End of column 1 (Goal) code

    'Column 2 (Listings) code...
    Me.txtCountListings = Nz(DCount("[ID]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [ListMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [ListYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear), 0)
    'End of column 2 (Listings) code

    'Column 3 (Pending) code...
    Me.txtListingsSoldPending = Nz(DCount("[ID]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Pending] = True"), 0)
    Me.txtBuyersSoldPending = Nz(DCount("[ID]", "tblTransactions", "[SellingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Pending] = True"), 0)
    'End of column 3 (Pending) code

    'Column 4 (Closed) code...
    Me.txtListingsSoldClosed = Nz(DCount("[ID]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Closed] = True"), 0)
    Me.txtBuyersSoldClosed = Nz(DCount("[ID]", "tblTransactions", "[SellingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Closed] = True"), 0)
    'End of column 4 (Closed) code
    'End of Group 1 Reporting


    'Group 2 Reporting Starts Here...
    'Column 1 (Goal) code...
    Me.txtCommBuyersSold = Nz(DLookup("[CommissionBuyersSold]", "tblMemberGoals", "[TeamMember] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [GoalMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [GoalYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear), 0)
    Me.txtAgntLead = Nz(DLookup("[AgentLead]", "tblMemberGoals", "[TeamMember] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [GoalMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [GoalYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear), 0)
    Me.txtCommSoldListingGoal = Nz(DLookup("[CommissionSoldListing]", "tblMemberGoals", "[TeamMember] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [GoalMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [GoalYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear), 0)
    'End of column 1 (Goal) code


    'Column 3 (Pending) code...
    'Me.txtLeadFromEdPend = Nz(DSum("[Agent Sale $ Commission]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Pending] = True" And [LeadFrom] = "Ed"), 0)
    Me.txtLeadFromEdPend = Nz(DSum("[Agent Sale $ Commission]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Pending] = True And [LeadFrom] = 'Ed'"), 0)
    Me.txtAgentLeadPending = Nz(DSum("[Agent Sale $ Commission]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Pending] = True And [LeadFrom] = 'Agent'"), 0)
    Me.txtCommSoldListingPending = Nz(DSum("[Agent Sale $ Commission]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Pending] = True"), 0)
    'End of column 3 (Pending) code


    'Column 4 (Closed) code...
    Me.txtLeadFromEdClsd = Nz(DSum("[Agent Sale $ Commission]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Closed] = True And [LeadFrom] = 'Ed'"), 0)
    Me.txtLeadEdClosed = Nz(DSum("[Agent Sale $ Commission]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Closed] = True And [LeadFrom] = 'Agent'"), 0)
    Me.txtCommSoldListingClosed = Nz(DSum("[Agent Sale $ Commission]", "tblTransactions", "[ListingAgent] = " & Forms!frmSelectDateRangeAndMembers!txtMemberName & " And [PendingMonth] = " & Forms!frmSelectDateRangeAndMembers!txtMonth & " And [PendingYear] = " & Forms!frmSelectDateRangeAndMembers!txtYear & " And [Closed] = True"), 0)
    'End of column 4 (Closed) code
    'End of Group 1 Reporting

End Sub