Your code doesn't even make sense...why not use a Boolean instead?? I don't get that you're mixing data types needlessly and then you aren't even consistent!
I'm assuming you typed this in the browser due to the lack of capitalization, and that you forgot your [code] blocks again!
As for your issue, you're declaring "MessageFake" as a String, and then not assigning it any value! So, technically, MessageFake = "" when you do your check. I don't even know
why you are when you could just see if the dern CheckBox is checked like you did previously!
EDIT: I seriously recommend you go pick up and use a tutorial. JMC has linked
this website before, and I'll even give you
this site as well. I can't guarantee the quality of the 2nd website (I found it merely in a quick search), but you really need to run through these tutorials. Your grasp of some basic concepts is severely lacking.