I have a web form that contains a list box with 10 items. I am able to pre-select a single item or select multiple items at run-time.  However, I would like to be able to pre-select multiple items.

The "Text/Selected" parameter in the "List Box" component seems to pre-select only a single item through an expression that must evaluate to True/False (such as MyPet eq 'Cat';).  I defined an array with the items to be pre-selected but the expression pre-selected only the first item in the array. 

Is there a way to pre-select multiple items? The attached picture shows what I would like the form to look like when it loads. The picture was generated by doing mulptiple-select (mouse click + Shift) at run-time.

Thanks,

Milan