Dropdown and checkbox

Dash Python
7

eduardo, i’m sure i 'm bothering you, i want to ask a last question :slight_smile:

                         html.Div(
                                 className='div-for-dropdown',
                                 children=[
                                     dcc.Dropdown(id='stockselector', 
                                                  options=[{'label': i, 'value': i} for i in data_list],
                                                  multi=False, 
                                                  value = '',
                                                  style={},
                                                  className='stockselector',
                                                  clearable=False,
                                                  placeholder = 'Select your parameters...',
                                                 
                                                  ),
                                 ],
                                 style={}),
                         html.Div(className='div-for-checklist',
                                 children=[
                                     dcc.Checklist(id = 'choosen_param',
                                                options=[],
                                                labelStyle={'display': 'block', "cursor" : "pointer"},
                                                labelClassName="group-labels",
                                              
                                          
                                            ),

                                     ]),

my layout code is that, and my callback code is

@app.callback(

[dash.dependencies.Output('choosen_param', 'options'),],

[dash.dependencies.Input('stockselector', 'value')],

)    

def update_output(dropdown_value):

    options = [[{'label': i, 'value':i} for i in [dropdown_value]]]

    return options

when i choose the dropdown option, i can see the last option of dropdown_list, it changes everytime but i want to add the checklist.

if i can take dropdown as “multi=True”, there is no problem but “False” it doesnt work.

Thank you