How to select lookup column on details page in glide app?

[Jeff_Hager]

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That’s not true. The back end tables work the same in Apps and Pages. Likewise, selecting data from those tables works the same. It’s very likely that the Relation thay your Lookup is referring to is a multiple relation. It needs to be a single relation. A Lookup column that can retrieve values from multiple rows will become an array. Arrays can contain multiple values. Even if an array contains only one value, it is still an array and could potentially have multiple values in the futur…