i solved this problem.
i rename all the lights like this light_1,light_2,light_3…
in debug model,GetName() return the correct name.
but in other model,GetName() return Light_1,Light_2,Light_3…
i dont know if this is a bug, i control other actor by name all work perfect.it’s always return the name what i set.
but,do with light, the first letter is upper case.