i4 + rgbw2 in white mode script crash

[lzoli]

Hi People, I would like to ask your help.

I have two shelly rgbw2-s in white mode (4 channel white) and a shelly i4 and have been trying to remote control the rgbw2 group from the i4 without luck.

What I try to do is to remote turn on/off 3 channels out of 4 and do other functions as well like dimming, but I have a problem I can't figure out.
Here is the script, the original I found online and rewritten a little:

/**
 * @copyright shelly-tools contributors
 * @license   GNU Affero General Public License (https://www.gnu.org/licenses/agpl-3.0.de.html)
 *
 * This script is intended to control a Shelly RGBW2 with a single button from
 * a Shelly Plus device. Every time the button from the Plus device is pushed it jumps to the next step 
 * defined in the sequence array. 
 */
 
// CONFIG START
// IP address or hostname(s) from RGBW2 device(s)
let REMOTE = {
    group: ["192.168.0.220","192.168.0.208"],
    channel: ["0","1","2"],
    input: 2, // ID from the push button: 0 for Shelly Plus 1 / Plus 1 PM or 0,1,2 or 3 for the Shelly i4.
};

// Dimming level 
let dimsequence = [
   '?brightness=65', // 65%
   '?brightness=33', // 33%
   '?brightness=11', // 11%
   '?brightness=2', // 2%
   '?brightness=100', // 100%
];
// CONFIG END 

// no need to change anything below this line..
let dimpos = 0;

// add an evenHandler for button type input and various push events
Shelly.addEventHandler(
    function (event, user_data) {
        //print(JSON.stringify(event));
        if (typeof event.info.event !== 'undefined') {
           
            if (event.info.event === 'double_push' && event.info.id === REMOTE.input) {
                for (let i=0; i<REMOTE.group.length; i++) {
                  for (let j=0; j<REMOTE.channel.length; j++) {
                    setRGBW(REMOTE.group[i], REMOTE.channel[j]);
                  }
                }
                dimpos = 0;

           } else if (event.info.event === 'single_push' && event.info.id === REMOTE.input) {
                for (let i=0; i<REMOTE.group.length; i++) {
                  for (let j=0; j<REMOTE.channel.length; j++) {
                    toggleRGBW(REMOTE.group[i], REMOTE.channel[j]);
                  }
                }

           } else if (event.info.event === 'long_push' && event.info.id === REMOTE.input) {
                for (let i=0; i<REMOTE.group.length; i++) {
                  for (let j=0; j<REMOTE.channel.length; j++) {
                    dimRGBW(REMOTE.group[i], REMOTE.channel[j], dimpos);
                  }
               }
               dimpos++;
               if (dimsequence.length === dimpos) {
                 dimpos = 0;
               }

           } else {
             return true;
           }
        } else {
            return true;
        }
    },
);

// send RBGW on command 
function setRGBW(group, channel) {
    Shelly.call(
        "http.get", {
            url: 'http://' + group + '/white/' + channel + '?turn=on&brightness=100'
        },
        function (response, error_code, error_message, ud) {
        },
        null
    );
};

 // send RBGW dimming command 
 function dimRGBW(group, channel, dimpos) {
   Shelly.call(
       "http.get", {
           url: 'http://' + group + '/white/' + channel + dimsequence[dimpos]
       },
       function (response, error_code, error_message, ud) {
           print(dimsequence[dimpos]);
       },
       null
   );
};

 // send RGBW toggle command
function toggleRGBW(group, channel) {
   Shelly.call(
       "http.get", {
           url: 'http://' + group + '/white/' + channel + '?turn=toggle'
       },
       function (response, error_code, error_message, ud) {
       },
       null
   );
}

If I only control 2 channels out of 3 on both of my shelly devices or I control only 1 shelly device and 3 channel on it, works fine, does what I ask from the rgbw2 controller.

If I want to control 3 or 4 channels on both of my shelly bgbw devices, my script crashes with the following error:

shelly_notification:209 Event from input:2: {"component":"input:2","id":2,"event":"btn_down","ts":1714545421.30} 08:37:01
shelly_notification:209 Event from input:2: {"component":"input:2","id":2,"event":"btn_up","ts":1714545421.53} 08:37:01
in function called from system 08:37:02
shelly_user_script.:388 error: Error in EjsCall 08:37:02
shelly_notification:209 Event from input:2: {"component":"input:2","id":2,"event":"single_push","ts":1714545421.80} 08:37:02
shos_rpc_inst.c:230 http.get via loopback 08:37:02
shelly_http_client.:306 0x3ffde5cc: HTTP GET http://192.168.0.208/white/0?turn=toggle 08:37:02
shos_rpc_inst.c:230 http.get via loopback 08:37:02
shelly_http_client.:306 0x3ffe1df0: HTTP GET http://192.168.0.208/white/1?turn=toggle 08:37:02
shelly_notification:163 Status change of script:2: {"id":2,"errors":["error"],"running":false} 08:37:02
shos_rpc_inst.c:230 http.get via loopback 08:37:02
shelly_http_client.:306 0x3ffe2220: HTTP GET http://192.168.0.208/white/2?turn=toggle 08:37:02
shos_rpc_inst.c:230 http.get via loopback 08:37:02
shelly_http_client.:306 0x3ffe3058: HTTP GET http://192.168.0.220/white/0?turn=toggle 08:37:02
shos_rpc_inst.c:230 http.get via loopback 08:37:02
shelly_http_client.:306 0x3ffe32ac: HTTP GET http://192.168.0.220/white/1?turn=toggle 08:37:02 shelly_http_client.:606 0x3ffe2220: Finished; bytes 295, code 200, redir 0/3, auth 0, status OK 08:37:02 shelly_ejs_rpc.cpp:77 No call record for 130 08:37:02 shelly_http_client.:606 0x3ffe32ac: Finished; bytes 295, code 200, redir 0/3, auth 0, status OK 08:37:02 shelly_ejs_rpc.cpp:77 No call record for 132 08:37:02 shelly_http_client.:606 0x3ffe3058: Finished; bytes 295, code 200, redir 0/3, auth 0, status OK 08:37:04 shelly_ejs_rpc.cpp:77 No call record for 131 08:37:04 shelly_http_client.:606 0x3ffe1df0: Finished; bytes 295, code 200, redir 0/3, auth 0, status OK 08:37:04 shelly_http_client.:606 0x3ffde5cc: Finished; bytes 295, code 200, redir 0/3, auth 0, status OK 08:37:04 shelly_ejs_rpc.cpp:77 No call record for 129 08:37:04 shelly_ejs_rpc.cpp:77 No call record for 128 08:37:04 

As you see, the script fails to execute http://192.168.0.220/white/2?turn=toggle  and just fails and exits instead.

I really can't figure what I'm doing wrong or how I should do it better to stop the script crashing on the i4 and control that last channel on the rgbw2.

Anyone could give me any clue? Many thanks!