Boolean example
Value: ASSET_LIST_FACET_Published
Text: {value, select, 1 {YourTrueText} 0 {YourFalseText}}
Another example
Value: sIsPublic
Text: Shareable and downloadable
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Text: {value, select, 1 {Yes} 0 {No}}
Debugging
If you are getting blank values - you can add this to find out what is missing. Alternatively, you can also just check the console log.
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