MIDI Controller

There is no direct mapping. The [vst~] object is a wrapper for other software (the loaded plugin). As with all wrappers, you have to interface it with objects under control of Max. To change a plugin parameter, you feed [vst~] with a number pair (list) consisting of the parameter number and a value between 0. and 1. To find the parameter numbers of your interest, you move plugin UI elements and monitor the parameter output of the [vst~] object.

To learn about functions and usage of Max objects, it is highly recommended to look at the help and reference pages provided for each single object.

I don't know what you want to do with Max, but not all plugins behave well in their [vst~] wrapper and the more vst~ objects you have, the more problematic you Max patch may become. Max is neither a music program nor a good plugin host, it is a programming environment.

But is there possible to send numbers from 0-127 or just 0. and 1. ????

• In your example you send the parameter number 3 with an integer value 1
  This may work to set the parameter to it's maximum, but you should use floating point values with a decimal point, for example [3 1.]

• You monitor the vst~ output with an integer number box. This does not work, because the output is a list. Use a message box or (often better) the [print] object.

For vst~ parameters, 0. is the minimum and 1. is the maximum. To control it by 0-127, you have to scale/convert the integer value to match the required floating point range.

You have several possibilities, here is one example with message boxes for monitoring and some comments:

Thank You It's working!!!!
if I have 30 parameters. Do I must make 30 times the same ?
30 sliders, 30 zmaps and [1 $1, 2 $1, 3 $1, ect]?

Do you really want parameter numbers 1-30
or 30 parameters with different numbers?

I have 30 knobs and I need send 30 MIDI CC

Yes, but do you need the parameter numbers in a continuous row
like 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ... and so on
or do you need different numbers
like 1, 2, 14, 15, 22, 34, 35, 40, 45 or something?

Yes, I need all parameters from 1-31 without gaps

One Example:

[split 1-31] forces you to use CC numbers 1-31 because other numbers are ignored. If you don't want that, use [+] or [-] before [split] to match your incoming CC numbers to vst~ parameter numbers.

The example above has no controls other than the port selector (which you can remove if you set the port in the [midiin] object). If you want sliders to view and/or control the values, just ask. There are some methods to add a bunch of them in an economical way.