nextion display dual state button

Hello , first sorry for my english. Im new at programming so my question maybe is really eay for experienced programmers. I use nextion display with couple pages on it. in some of the pages i have dual state button. When i click on the button its changing its state, but when i change the page and after that return to the same page (this one where the button is) the button state is like before clicking on it. So what have to do to be able to save the state of the button ??? In other words i want when i click on the button and change the page the button to be on his last state.Thank you in advance.

I just did a quick test on editor simulator, if you change the vscope propertry of the button from local to global the buttun retain its value.

Ciao, Ale.

Thanks for the answer.