How Can I Teleport The Character?

Hello, everyone! How can I teleport the character from a main world to an extra world. I know that Portal works only in the same world, right? How can I do it?
Thx!

 

With Menue Jump ... Bit the Problem is they dont save the other world you have all powerups and coins in the old world one more Back ....

 

omg, this is a problem... I would like that extra world will be available sometimes, not always. This is possible?

 

It have no solution?

 

Do u know how the character can back to the same place that entered in the menu jump (secret world)?

 

That is the Problem it dont works ... I make secrets with Teleporter or other with invisible Walls ...