I have a matrix of 32 buttons, I would need to make each button to send a different MIDI note.
I use a script for each button inside matrix's props ;
doc says :
Formulas in this field are resolved with an extra variable representing each widget's index: $
but I can't manage to find the way to use $ properly...
for ex I would like to do :
"script": "send('midi:mon_port_midi', '/note', 1, , value)"
(so first button will send note 1, second button note 2, ...)
but this doesn't work, and I can't find any example of usage of in matrix props...
please help 
Hi,
The $ variable is available in JS{{}} and #{} blocks, not in scripts (unless you put such a block in the script, eg #{$}). In the future I’ll probably add a generic way to get a widget’s index from any script (not only in matrices).
In your case though it’s not necessary to use a script, you could simply set these properties in props:
-
target to midi:port
-
address to /note
-
preArgs to [1, #{$}]
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Thanks for your help
using this code in matrix's props works fine :
{
"mode": "push",
"on": 100,
"target": "midi:mon_port_midi",
"address": "/note",
"preArgs": [1, #{$+48}]
}
this one works as well :
{
"mode": "push",
"on": 100,
"script": "send('midi:mon_port_midi', '/note', 1, #{$}+48, value)"
}
As I'm not a JS expert, I'm still very confused by the many syntax subtilities ...
but amazed by the endless possibilities !
Having in the doc just one line of code showing how to use $ in matrix props would realy help 
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