Yeah, i need right that. But i don't know how i can do it. I understand that i should create a variable called "oldstate", but what kind of value i've to give to it? Can you show me a code example?
thank you very much, my friend!
Yeah, i need right that. But i don't know how i can do it. I understand that i should create a variable called "oldstate", but what kind of value i've to give to it? Can you show me a code example?
thank you very much, my friend!