Text and variable

So, should I put the variable in the Play world? I think there will be a problem because those buttons Ro and En appear in MyWorld, only after one is pressed will appear the Play world. I really don't understand what should i do. I'm sorry guys i don't get it. But i really need help for this. And i want to thank you for this

You are using the chosen language in the Play world. It seems logical to place the field, along with its related 'getter' and 'setter' methods, in it.