I think I have found a solution. Please tell me if it is accurate: I didn't include any v255 thing and, instead, set the v to 0. For example:
animate.obj(rose);
load.view(3);
set.view(rose,3);
set.loop(rose,0);
set.cel(rose,0);
position(rose,58,125);
set.priority(rose,11);
ignore.objs(rose);
stop.cycling(rose);
if (obj.in.room("rose",v0)) { draw(rose); }
animate.obj(candy);
load.view(4);
set.view(candy,4);
set.loop(candy,0);
set.cel(candy,0);
position(candy,60,150);
set.priority(candy,11);
ignore.objs(candy);
stop.cycling(candy);
if (obj.in.room("candy box",v0)) { draw(candy); }
It works, but is it buggy? Thanks Robin for helping.