FYI it can be a bit confusing to use those functions in microscript for something like the 8-channel. It’s a unclear in the function help prompt how to refer to the channel number when there’s a single microscript that is used by 8 channels - so do you reference FCA channel 1? Channel 8? Channel X? Less important for tip-touch since this is a single value, but still can cause some head-scratching.
Luckily, you should have an example microscript that you can use for a template in the installation CD - see this comment on how to find it. Liquid dection in LC microscript - #3 by Snowball