Juniper MX104 NAT between routing-instances (VRF)?

I have been assigned a NAT pool that we are advertising via eBGP on an interface.

The eBGP routers are in their own routing-instance. How do I configure 1-to-1 NAT from the BGP routing-instance to another routing instance?

I read this post, but those commands are for a SRX, not an MX and do not work.