BGP communities to 2 different ISP for advertising a /24

I am trying to setup BGP to 2 different ISP in 2 different datacenters. We have a /24 public network we want to advertise out.

DC1 is the primary DC and DC2 is the secondary DC. Have Vocus and Optus in both.

DC1 Vocus primary, Optus Secondary. DC2 Optus primary (3rd) DC2 Vocus (4th). (would have liked to had the Vocus primary at both but someone ordered different bandwidths :( )

Looking at Vocus i cant see anything with communities about setting the LCL pref but Optus does, but i want that the secondary from DC1.

Any pointers before i hit the ISPs up again as they previously advised me that we cant do anything.

cheers