visibility of sprites

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hello
i hope can explain properly.. need create button lets user show or hide number of sprites. new sprite appear each time user clicks 'next' need of them either hidden or showing when user presses show/hide button, if half showing when press it. make sense?

i have code

buttonpress = true
sprite(1).visibility = buttonpress
sprite(2).visibility = buttonpress

buttonpress = not buttonpress

but i'm not sure i'm putting these pieces of code, or if work....

thanks, hope makes kind of sense!

you can use of blend property

sprite(1).blend = 0 -- invisible
sprite(1).blend = 100 -- visible


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