Failed expand string in manualroute

I try add route with redirect based on mx record.

But my regexp never work.

Exim 4.90, os ubontu 18.04.

My config:

  driver     = manualroute
  #condition = ${lookup dnsdb{mxh=^}{true}fail}
  condition  = ${lookup dnsdb{mxh=^.*$}{true}fail}
  transport  = non_mydom
  route_list = *

Test routing failed:
  router = dnslookup, transport = remote_smtp
  host [xxxx] MX=10
  host [xxxx] MX=20

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Author: Terentev Maksim