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lcFilter = [NOT EMPTY( CHRTRAN( Amenities, &cValidAmenities, " "))]

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>Can I put this modified expression in a table? cValidAmenities would be a global string.

I think you can but you'll have to modify it a little bit

lcFilter = [NOT EMPTY( CHRTRAN( Amenities, "&cValidAmenities", ""))]

>Lookups tables rarely get updated (almost never), so instead of using cValidAmenities string I can explicitly put the values.

It's dangerous because at some time it could change and nobody would remember that the filter expression has to be changed also.

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