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ToscA with Logic Pro X

And if you have time, what would be the best way to save parameters that don’t need to be saved as automations in the DAW such as sources perceptual factors (source brilliance etc) or reverbs. You may have an advice, as I noticed after closing the patch this parameters values get lost. I found the object - preset - it is working but if you have any better suggestion it would be great. cheers

Yes, for parameters that are not automated, you can use the “preset” object.
Or store the spat oper status in a dictionary (see e.g. the spat.oper help patch, “working with dict” tab).
Or just “dump” the state of spat oper and keep it in a Max message.
I usually prefer the dictionary technique; but whatever works…

Just out of curiosity, why doesn’t spat.oper dump the Reverb’s Room Size parameter?

The “dump” message dumps all the attributes of the object, and room size is not an attribute.
Why? mainly because it is a meta-parameter (a parameter controlling several others) and it would be difficult to handle that with attributes.

makes sense. thank you very much!