>messagebox("Hello " + int_number)

Hi Robert,

You might want to use Transform() rather than Str() since it trims off leading spaces where Str() doesn't.

Also, please title your threads with something more descriptive of the actual problem so people will know right away if they're interested in reading the thread. Something like "How to use a number in a MessageBox" would describe it perfectly. And, as others said in this thread, there are very few stupid questions.