I tried to pass data from child window to parent window using javascript but parent.returnvalue is not working in chrome. Is there any alternative of parent.returnvalue??

CODE

      var txtfolioID = document.getElementById('<%= txtfolioID.ClientID %>');
      var txtfolioName = document.getElementById('<%= txtfolioName.ClientID %>');
      
      var ret = new Array(Number(txtfolioID.value),
                        txtfolioName.value);

      parent.returnValue = ret;

This parent.returnValue is not working at all. Please help

EDIT I changed the code parent.returnValue to this

       var opener = window.opener;
                    if (opener) {
                        var oDom = opener.document;
                        var elem = oDom.getElementById("txtfolio");
                        if (elem) {
                            elem.value = 'Success';
                        }
                    }

Now the error Cannot read properties of null (reading 'document') is gone but still it's not showing the child window value to parent window. Any idea?