Arcade Label Expression - Help

[-_Ashley-B-Potter_-]

I am currently stuck on the best way to display our par #s accurately. I display our par #s in a 000.000 format, however,  I have a string of numbers that display an additional sequence. 000.000-000 as shown below. I need to be able to show both strings of par #s on our maps. Any recommendations on how to display both using labeling?

Current labeling expression: Display format: 000.000

if ($feature.IsSeed != 1){

    return "<BOL>" + Right($feature.name,3) + "</BOL>"

}

[JesseWickizer]

Can you please clarify - do only some of the parcels have the last 3 digits after the dash and you want to only show those last 4 characters (dash plus 3 digits) if the IsSeed field == 1? Otherwise can you explain what you're looking to do?