This is a variation of the text CONTAINS block that is useful for this:
Use the little pulldown in the text CONTAINS block to switch flavors.
You want to apply this test to item 1 of each item, since that is the part of the item that would contain the piece(s) you want.
See
for a multiselect sample, for how to assemble the little list of vehicle types from a master list.
You could use ListView instad of List Pickers, to taste.
