There's an error on one of my channels shows menu
"error must turn a value (21)"
I think it involves the method below but I don't know what it is
Function CreateHomeworkHelperzMenu() as integer
screen = CreateObject("roGridScreen")
port = CreateObject("roMessagePort")
screen.SetMessagePort(port)
'prepare the screen for display and get ready to begin
screen=preShowPosterScreen("", "")
if screen=invalid then
print "unexpected error in preShowPosterScreen"
return
end if
'set to go, time to get started
showPosterScreen(screen)
End Function