A pretty effective way of doing this kind of task is to use the FoundImageRectangle property of an OCR search to create a SearchRectangle.
Put ImageRectangle (text:"version=", ValidWords:"*") into VersionTag //Since the string we're searching for isn't a dictionary word the ValidWords:"*" can help out.
Put ReadText ((right of VersionTag, top of VersionTag +5, x of RemoteScreenSize(), bottom of VersionTag), ValidCharacters:"1234567890.") into VersionNumber //Limiting the available characters for the read should improve reliability of the result.
That will end up getting you all the text to the right of the string "version=". If there's some other limit you could use, like the edge of a UI element, then the X of that could be used instead of the RemoteScreenSize.