Last tested: Dec 9, 2020
User has added value_format to their field which is correct but no changes on the explore side
They most likely have not set the type of their dimension at all or have not set it to be numeric. Make sure they have defined type: number for that field as per our docs;
To apply Excel-style formatting to measures via value_format, make sure the measure is numeric and not of type: string.
https://docs.looker.com/reference/field-params/value_format
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