diff --git a/frontends/src/jp/xmlui_manager.py b/frontends/src/jp/xmlui_manager.py
index dd2e699b..9fc3cdc9 100644
--- a/frontends/src/jp/xmlui_manager.py
+++ b/frontends/src/jp/xmlui_manager.py
@@ -433,7 +433,10 @@ class XMLUIPanel(xmlui_manager.XMLUIPanel):
                 return
             elif isinstance(cmd, list):
                 name, value = cmd
-                self.widgets[name].value = value
+                widget = self.widgets[name]
+                if widget.type == 'bool':
+                    value = C.bool(value)
+                widget.value = value
         self.show()
 
     def submitForm(self, callback=None):