GT06 Generic does not stop engine

Hi, I have a generic GT06 that stops engine when I sending a sms "cut123456", but it not works when I sending the command by Traccar. Anyone can help me?

See the logs:

2018-08-21 15:54:53  INFO: [BD3A8489] id: 352887076662117, time: 2018-08-21 15:54:46, lat: -23.56453, lon: -46.58978, speed: 0.0, course: 0.0
2018-08-21 15:54:55  INFO: [BD3A8489] id: 352887076662117, time: 2018-08-21 15:54:46, lat: -23.56453, lon: -46.58978, speed: 0.0, course: 0.0
2018-08-21 15:55:08  INFO: [BD3A8489] id: 352887076662117, command type: engineStop sent
2018-08-21 15:55:22  INFO: [BD3A8489] id: 352887076662117, command type: engineResume sent
2018-08-21 15:55:26  INFO: [BD3A8489] id: 352887076662117, time: 2018-08-21 15:55:16, lat: -23.56455, lon: -46.58980, speed: 0.0, course: 0.0
2018-08-21 15:56:07  INFO: [BD3A8489] id: 352887076662117, time: 2018-08-21 15:55:16, lat: -23.56455, lon: -46.58980, speed: 0.0, course: 0.0
2018-08-21 15:56:29  INFO: [BD3A8489] id: 352887076662117, time: 2018-08-21 15:55:46, lat: -23.56455, lon: -46.58979, speed: 0.0, course: 0.0
2018-08-21 15:56:29  INFO: [BD3A8489] id: 352887076662117, command type: engineStop sent
2018-08-21 15:56:31  INFO: [BD3A8489] id: 352887076662117, time: 2018-08-21 15:56:16, lat: -23.56455, lon: -46.58979, speed: 0.0, course: 0.0
2018-08-21 15:56:45  INFO: [BD3A8489] id: 352887076662117, time: 2018-08-21 15:56:46, lat: -23.56452, lon: -46.58978, speed: 0.0, course: 0.0
2018-08-21 15:56:52  INFO: [BD3A8489] id: 352887076662117, command type: custom sent
2018-08-21 15:56:58  INFO: [BD3A8489] id: 352887076662117, time: 2018-08-21 15:56:46, lat: -23.56452, lon: -46.58978, speed: 0.0, course: 0.0
2018-08-21 15:57:15  INFO: [BD3A8489] id: 352887076662117, time: 2018-08-21 15:57:16, lat: -23.56449, lon: -46.58978, speed: 0.0, course: 0.0

And in traccar.xml

<entry key='gt06.timezone'>-3</entry>
<entry key='gt06.alternative'>true</entry>

Thanks!

Sorry!
After engineStop sent

787815800f000000004459442c313233343536230000755a0d0a

Then, the device response

78781f1212081513042bc90284f1d904fbec4727386802d40a177b000d0800108d520d0a

You need to check with your device vendor to see what format your device accepts.

OK. Can I pass the format directly on Traccar, using "custom command"? Example: Format is "XPTONNNN". I'm asking because by SMS the command cut123456 is accepted, but if I send this same command by Traccar, using the "custom command option" it is not accepted. Should I convert this before sending directly?

You can, but how sure are you that format is the same via SMS and via data connection?

You are right, thanks!