Dropdown value failed to be changed

[zichaolim]

Dropdown style={{ height: 20, width: 300,marginTop:5}} values={this.state.countryList} onChange={this.onChangeCountry.bind(this)} selected={this.state.selectedCountryNumber}

Dropdown style={{ height: 20, width: 300,marginTop:5}} values={this.state.clubList} onChange={this.onChangeClubList.bind(this)} selected={0}

I got two dropdown and after I select another value of the country dropdown, I do the following action:

setState({clubList: change some array items });

but then the items of dropdown for clublist are still the same with previous items, no change. How to make it change?

[zichaolim]

surprisingly, it works now!