How do I make M4L control the value of a parameter?

Hi everyone,

I am new to the Ableton and M4L world. I am responsible for the playback of a cover band and I wanna automate the mix-value of several autotune instances in Ableton. I want the corresponding Autotune instances Mix value to be 0, when the playback stops, and I want it to jump back to 100% when playback starts. Preferable with a ramp of 100ms.

I found patch, which reads out the playback state of Ableton and responding with 0 and 1 (0=stopped / 1=playing).

Know I am a little lost. How can I send those values (like 0% and 100%) to the corresponding parameter or macro. I already mapped the value to a makro, but now I don't know how to send the value out of M4L to the makro.

Here is, what I currently have:

The red circled part already works - it responds with 0 and 1.

Can somebody please instruct me, how to do the rest? :D

Thanks in advance!

Best regards,
Max