multiworld help

I have two worlds in my worlds folder in yml format but it won't let me teleport between and everytime I type in /tp redhairboy56 w:survival (survival is the folder name) it says couldnt teleport why?

redhairboy56 wrote:I have two world's in my worlds folder in yml format but it won't let me teleport between and everytime I type in /tp redhairboy56 w:survival (survival is the folder name) it says couldnt teleport why?

if using the simple world's plugin type /simple world's load WORLDNAME
Replace WORLDNAME with the actuall name of the world etc you trying survival so do
/simple world's load survival
/to redhairboy56 w:survival