I just tested and confirmed, you can change the 38300 value by using the API. Watch the video and apply the steps till 1:37, Use the link below instead of the one i provided in the video, when i made the video url was different.
Instead of the value in the video use the one below, it will directly change a specific submissions, specific value. Replace the submission id with the submission you would like change, you can find the “_id” value under the data tab, it is in the end of the table as “_id”. copy the value and paste it to code below, and you can replace the “3” with any value you would like to replace the current value. In the end it looks like something in the image below.
If it the request return “200 OK” that means it was successful. Let me know if you need more help
{
"submission_ids": ["648485946"],
"data": {
"NbSpecies":"3"
}
}
https://eu.kobotoolbox.org/api/v2/assets/{your formid}/data/bulk/