I have pulled a complete mind blank and i cannot think of what to search the forums for.

I have a data stream from -1 - 999. I wish to use the -1 to output a 0 and anything else output a 1. I have experimented with sel and == and IF but i cannot figure out the correct way to patch this. I only wish ONE 0 output until the data stream changes then ONE 1 output until the data moves back to -1.

Hope this is clear enough, any help will be greatly appriciated.

Regards

Lloyd