It sounds like you want to use the MessageDisplayByValue. It only shows one message represented by the value in PLCAddressValue
So, i tried MessageDisplayByValue but it kept generating a scrolling list of messages and the latest message displayed at the bottom. I saw a variable called maximum messages or something like that which was 50, but i could not set it to 1.
My message will be of varying length and may be several lines or a sentence, but it might just be one or two words - these are step instructions for the operator to follow and having old steps on the screen will be a no go.
Im also curious if this is possible because i have some other applications for the INI file using something read from the PLC.
My intended use of this looks like a big message area in the center of the screen. I was also hoping to add some INI options for the font size too so i could format accordingly.