Change the contents of a message with a float?

Fritz Pape's icon

I've got a handful of patches that use messages to fade between two numerical points with two messages - would it be possible to change the contents of that message with a bang and a float or something? I'd love to add that kind of randomization into these.

ct5 tests.maxpat
Max Patch

Here's the patch specifically. It's real messy, but the section in question is in green

Christopher Dobrian's icon

I see no green section. Perhaps upload only the relevant part?

But, if I'm to guess that it's the part where you have the pack and line objects, how about just generating whatever value you want and sending it to line?

Max Patch
Copy patch and select New From Clipboard in Max.