Too bad this code does not seem to work

src/mainwindow.cpp

@@ -1290,9 +1290,18 @@ void MainWindow::importPrivKey() {
             delete multiline;
         }
 
-        //TODO: if rescan is not checked, disable the rescan height input
         bool rescan = pui.chkrescan->isChecked();
 
+        //TODO: if rescan is not checked, disable the rescan height input
+        // Why don't these work?
+        if (rescan) {
+            //pui.rescanfrom->setEnabled(true);
+            pui.rescanfrom->setReadOnly(false);
+        } else {
+            //pui.rescanfrom->setDisabled(true);
+            pui.rescanfrom->setReadOnly(true);
+        }
+
         // Start the import. The function takes ownership of keys
         QTimer::singleShot(1, [=]() {
             // we import all keys without rescanning and then finally decide if we will rescan once
@@ -1300,7 +1309,7 @@ void MainWindow::importPrivKey() {
 
             if (rescan) {
                 rpc->rescan(pui.rescanfrom->text().toInt() , [=] (QJsonValue response){
-                    qDebug() << __func__ << ":rescanning from height " << pui.rescanfrom << " finished" << response;
+                    qDebug() << __func__ << ":rescanning from height " << pui.rescanfrom->text().toInt() << " finished" << response;
                     ui->statusBar->showMessage(tr("Rescanning finished"), 5000);
                 });
             }