Scratch

I found when i was making a project that i wanted some code to do one thing from the start and if something is broadcast-ed then it should change e.g.

"forever if i receive 'broadcast one' when button 'i' is pushed show sprite one else if 'i' is pushed show sprite 2."

but with scratch you could have this so when 'i' is pushed sprite one and sprite 2 would be shown, I am not sure if this is the best example but I am hoping you understand what I mean? 

so basically I was thinking a <if I receive [  broadcast ]> button should be made