```
admin@vyos# set vrf name SECOMAT table
Possible completions:
<100-65535> Routing table ID
10001
admin@vyos# set policy route PRIVATE_TO_SECOMAT rule 2 set table
Possible completions:
<1-200> Table number
main Main table
```
Since you can set VRF table numbers between 100 and 65535 (I'm actually not sure where this limit comes from, I think it's 2^32-1 nowadays and T6251 expanded the allowed range to it) you should be able to set them in a route policy as well.
I think the code change is necessary just in https://github.com/HollyGurza/vyos-1x/blob/current/interface-definitions/include/policy/route-common.xml.i#L176 .