I need to do 1099s for rental condos I manage. Per rental, the HO gets 60%, I keep 40%. Ex: a condo generates $1000 in rev. What do I report on the 1099: $1000 OR $600?

I need to create 1099s for some rental condos that I manage.  The 'revenue share' is 60/40 (the homeowner will receive 60% of each rental, I will keep 40%).  So, for example, a rental condo generates $1000 in income.  The HO will receive $600, I'll keep $400.  At year end, which # do I list as income for the homeowner on the 1099:  $600 OR $1000?