why Property binding not affect on bootstrap model although it have va

I work on razor asp.net . I face issue I can't get value of blackprintername on bootstrap model

although I get the values of this property on page model but on razor html not display on input text box Black server Ip or black printer name .

I execute method type function OnGetCheckColors to get black server IP and black printer name but this not happen so why this happen and how to solve this issue

code details

$('#editbootstarp tbody').on('click', 'tr', function () {
    // Get the data from the clicked row
    var rowData = $(this).children('td').map(function () {
        return $(this).text();
    }).get();

    // Set the values of the modal's input fields
 
    $('#editshelflabelModal #edit-id').val(rowData[0]);
  
    $('#editshelflabelModal #edit-Location').val(rowData[6]);

    // Show the modal
    $.ajax({
        url: '?handler=CheckColors',
        type: "GET",
        data: { LocationName: rowData[6]},
        success: function (result) {
            $('#editshelflabelModal').modal('show');
            console.log(result);
        },
        error: function (xhr, status, error) {
            console.log(error);
        }
    });
    $('#editshelflabelModal').modal('show');
});

public ActionResult OnGetCheckColors(string LocationName)
{
    List<SubPrinters> subPrintlist = _IAdcSupportService.GetAvailablePrintersLists(Session.GetString("BranchCodesSelected"), LocationName, "SUB");
    if (subPrintlist != null && subPrintlist.Count > 0)
    {
        foreach (SubPrinters subPrint in subPrintlist)
        {
            if (subPrint.Category == "Red" && subPrint.IsActive)
            {
                Redprintername = subPrint.PrinterName;
                Redserverip = subPrint.PrinterIP;
          
            }
            
            else if (subPrint.Category == "Black" && subPrint.IsActive)
            {
                Blackprintername = subPrint.PrinterName;
                Blackserverip = subPrint.PrinterIP;

            }
        }
    }
    return new JsonResult("success");
}

<div class="modal fade" id="editshelflabelModal" tabindex="-1" role="dialog" aria-labelledby="userDetailsModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered" role="document">
        <div class="modal-content">
            <h5 class="modal-title" style="text-align:center;">
            </h5>
            <div class="modal-header">
                <h5 class="modal-title" id="editshelflabelModaldata" style="margin-left:200px;">Hi,@TempData["UserID"]</h5>
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
            </div>
            <form id="edit-form" method="post" asp-page-handler="shiftDataUp">
            <div class="modal-body">
        
                    <input type="hidden" id="edit-id" name="ShiftId">
                    <div class="form-group">
                        <label for="edit-server">Server IP</label>
                        <input type="text" class="form-control" id="edit-ip" name="serverip">
                    </div>
                    <div class="form-group">
                        <label for="edit-printer">Printer Name</label>
                        <input type="text" class="form-control" id="edit-printername" name="printername">
                    </div>
                    <div class="form-group">
                        <label for="edit-locationsdata">Location Name</label>
                        <input type="text" class="form-control" id="edit-Location"  name="Location">
                    </div>
                    <div class="row">
                    <div id="Blackdiv">
                        <div class="row">
                            <div class="col-lg-4">
                                <div class="form-group">
                                    <h6 class="heading text-darker ml-9" style="margin-top: 12%;">Black Printer</h6>
                                </div>
                            </div>
                            <div class="col-lg-4">
                                <div class="form-group">
                                    <label class="form-control-label" for="txtBlackIP">IP Address</label>
                                    <input type="text" id="txtblackip-id" asp-for="Blackserverip" name="blackipdata">
                                </div>
                            </div>
                            <div class="col-md-4">
                                <div class="form-group">
                                    <label class="form-control-label" for="txtBlackName">Printer Shared Name</label>
                                    <input type="text"  id="txtBlackName" value="@Model.Blackprintername" class="form-control">
                                    
                                </div>
                            </div>
                        </div>
                    </div>
            </div>
            </form>
        </div>
    </div>
</div>

Image for debugging issue as below :