Search exact value in List view widget

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I am trying the List view controls widget from the app store. I need to set up a free text search widget, that filters on the exact values (not contains).   Example: article entity with attribute width (decimal).  Article 1: 30 width Article 2: 130 width Article 3: 230 width   If I use the text box search from the list view control widget. If I search for 30 width, only article 1 should show up. However, currently, all 3 articles are shown. Is there a solution for that? (in the classical search fields, you can change the matching between "Contains" "exact match" ... have not figured out how to do that with the text box search.
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