fix

Gradio_UI.py

@@ -420,9 +420,10 @@ class GradioUI:
                     1, 12, value=self.agent_get_steps(), step=1, label="Max. Number of Steps"
                 )
                 steps_input.change(self.agent_set_steps, steps_input, None)
+                selected = elf.agent_get_tools()
                 tools_list = gr.Dropdown(
-                    choices=self.agent_get_tools(), 
-                    value=this.choices,
+                    choices=selected, 
+                    value=selected,
                     interactive=True,
                     multiselect=True,
                     label="Tools",