HCAD property valuations

We just had our property appraisal review hearing, and the adjuster and reviewer absolutely refused to take into account that our unelevated but repaired home is in 100-year flood plain. They insisted on running comps only against homes that haven’t flooded. We couldn’t get them to budge on that; it’s clearly no longer a factor in their appraisals, although I promise it’s a factor for potential purchasers. Any suggestions on getting them to consider proper comps for next year’s protest?