While display list /combobox / drop down showing error

[RockLala]

I am using list box widgets and trying to display combo Box / list / drop down But all are not working.. Also in log it showing following error:- 

An error occurred while calling dhxlist::afterRender, Id = "dhxlist-8".Exception: Cannot read property '1' of null

could you please help me on this

Thanks in advance,

Lala

[mneumann]

@RockLala

Did you bind the "Data" and select the "Display" & "Value" Field?

The error looks a bit like it's missing a binding - or expecting some property, but has a NULL value instead.

[ptc-6737818]

@RockLala  and @mneumann

How to create a drop down box?

I want to display multiple values in it and select multiple values.

How can I achieve this?

[mneumann]

@ptc-6737818

use the List Widget in DropDown mode

http://support.ptc.com/help/thingworx_hc/thingworx_8_hc/en/#page/ThingWorx%2FHelp%2FMashup_Builder%2FWidgets%2FListWidget.html