FR: Better error handling: "Returned failure by custom cell resolver"

[mkrijtenberg]

Hi,

I use a custom resolver to parse some cells, which does some input validation. I can only return true or false and the resulting error message is too generic "Returned failure by custom cell resolver". I would like to add my own message. Is it maybe possible to expose the ColumnFailed method, or maybe return an error message instead of a boolean?

Thanks!